Company lists · Data refreshed November 2026
Top 25 Directional coupler calibration services based in the United States
RevenueBase identified 76 company matches for directional coupler calibration services associated with the United States as of November 2026 and tracks 834 professional contacts across them, including 324 with verified work emails. Hialeah is the largest hub.
This list covers company matches for directional coupler calibration services associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest directional coupler calibration services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 100 contacts → | ||||
Exact match “Every Measurement Matters.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 2 | 87 contacts → | ||||
Exact match “Essco Calibration Laboratory provides calibration services for a wide variety of commercial test equipment.Capabilities include electronic, mechanical, fiber-optic…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 67 contacts → | ||||
Exact match “Constellation PowerLabs has been performing quality calibrations and testing services since 1911.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 4 | 36 contacts → | ||||
Exact match “Cal-Cert has provided high quality, professional calibration services to the materials testing industry for over 40 years and is currently accredited to ISO/IEC17025 through IAS…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 34 contacts → | ||||
Exact match “Electrical Test Instruments (ETI) is a leader in the calibration, repair, and sale of test and measurement equipment.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 32 contacts → | ||||
Exact match “Assurance Technologies, Inc.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 29 contacts → | ||||
Exact match “American Calibration Inc.(ACI), part of the Concept family of companies, is proudly expanding and has been serving the industry coast-to-coast for over 30 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 17 contacts → | ||||
Exact match “American Gage is a leading metrology laboratory in Southern California serving the Life Science & Aerospace industry for over 50 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 9 | 16 contacts → | ||||
Exact match “Alliance Calibration is centrally located in Cincinnati, Ohio.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 10 | 15 contacts → | ||||
Exact match “F.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 14 contacts → | ||||
Exact match “Werbel Microwave LLC specializes in creating high-performance RF and microwave products for various applications, including military and commercial use.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 14 contacts → | ||||
Exact match “Tra-Cal is a leading ISO-17025 accredited calibration lab serving 200+ customers including NASA, the DoD, Research Institutions, Satellite and Telecommunications providers, Life…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 13 contacts → | ||||
Exact match “Western States Calibration is a leading provider of consumer services based out Salt Lake City, Utah, specializing in the science of measurement.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 13 contacts → | ||||
Exact match “Precision Labs is a calibration service company operating in a accredited ISO 17025 quality environment.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 13 contacts → | ||||
Exact match “We shall provide superior calibration and repair services while continuously improving customer service and excellence in quality and reliability.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 12 contacts → | ||||
Exact match “OCS Technologies was founded as Ohio Counting Scale in 1930 and has grown into a multi-disciplined calibration service provider and leading product distributor today.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 11 contacts → | ||||
Exact match “THERMO-TEMP, INCORPORATED is YOUR CALIBRATION RESOURCE!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 9 contacts → | ||||
Exact match “At Holts Precision, Inc.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 19 | 9 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 20 | 8 contacts → | ||||
Exact match “Accura Calibration is a service-oriented calibration lab specializing in a wide range of measurement and test equipment.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 21 | 8 contacts → | ||||
Exact match “Founded in 1988, Southwest Calibration Service supports the test and measurement needs of manufacturers across energy, aerospace, pharmaceutical, industrial, and chemical…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 22 | 8 contacts → | ||||
Exact match “We are ISO-17025 accredited and licensed to work in all the states we operate in.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 23 | 8 contacts → | ||||
Exact match “KELI Labs is a trusted calibration partner for some of the world’s leading organizations across aviation, aerospace, defense, and manufacturing.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 24 | 7 contacts → | ||||
Exact match “Precision Calibration Systems "PCS" is a full service ISO/IEC 17025 Accredited calibration laboratory located in Morristown,Tennessee.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 25 | 7 contacts → | ||||
Exact match “Calyx helps HTM’s improve the quality of patient care, reduce risks and contain the cost of healthcare.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “directional coupler calibration services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 76 directional coupler calibration services based in the United States
See the full list, filter by size, metro and specialty, and access 324 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Directional coupler calibration services based in the United States at a glance
As of Nov 5, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 76 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “directional coupler calibration services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 324 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 5, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “directional coupler calibration services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many directional coupler calibration services are there based in the United States?
RevenueBase identified 76 company matches for directional coupler calibration services associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Standard Calibrations, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most directional coupler calibration services?
Hialeah leads with 3 company records, followed by Cleveland (2) and Gaithersburg (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 324 professional contacts with verified work emails tracked across these 76 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 76 directional coupler calibration services based in the United States. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Oil and gas companies based in the United States
- Utilities based in the United States
- 3d printing companies based in the United States
Company intelligence · public preview
Top 25 directional coupler calibration services based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 76 matching company records for directional coupler calibration services based in the United States, with 834 tracked contacts and 324 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 directional coupler calibration services based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Standard Calibrations, INCstandardcal.comHQ: Chesapeake, VA, United StatesReported employees: 51-200 | Chesapeake, VA, United States | 51-200 | Exact match | 100 contacts → |
“Every Measurement Matters.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Essco Calibration Laboratoryesscolab.comHQ: Chelmsford, MA, United StatesReported employees: 51-200 | Chelmsford, MA, United States | 51-200 | Exact match | 87 contacts → |
“Essco Calibration Laboratory provides calibration services for a wide variety of commercial test equipment.Capabilities include electronic, mechanical, fiber-optic…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Constellation Powerlabsconstellationpowerlabs.comHQ: Coatesville, IL, United StatesReported employees: 51-200 | Coatesville, IL, United States | 51-200 | Exact match | 67 contacts → |
“Constellation PowerLabs has been performing quality calibrations and testing services since 1911.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Cal-Certcal-cert.comHQ: Milwaukie, OR, United StatesReported employees: 11-50 | Milwaukie, OR, United States | 11-50 | Exact match | 36 contacts → |
“Cal-Cert has provided high quality, professional calibration services to the materials testing industry for over 40 years and is currently accredited to ISO/IEC17025 through IAS…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  ETI Precisionetiprecision.comHQ: Frederick, MD, United StatesReported employees: 51-200 | Frederick, MD, United States | 51-200 | Exact match | 34 contacts → |
“Electrical Test Instruments (ETI) is a leader in the calibration, repair, and sale of test and measurement equipment.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Assurance Technologiesatiquality.comHQ: Elgin, IL, United StatesReported employees: 11-50 | Elgin, IL, United States | 11-50 | Exact match | 32 contacts → |
“Assurance Technologies, Inc.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  American Calibrationamericancalibration.comHQ: Fox River Grove, IL, United StatesReported employees: 11-50 | Fox River Grove, IL, United States | 11-50 | Exact match | 29 contacts → |
“American Calibration Inc.(ACI), part of the Concept family of companies, is proudly expanding and has been serving the industry coast-to-coast for over 30 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  American Gageamericangage.comHQ: Placentia, CA, United StatesReported employees: 11-50 | Placentia, CA, United States | 11-50 | Exact match | 17 contacts → |
“American Gage is a leading metrology laboratory in Southern California serving the Life Science & Aerospace industry for over 50 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Alliance Calibrationalliancecalibration.comHQ: Cincinnati, OH, United StatesReported employees: 11-50 | Cincinnati, OH, United States | 11-50 | Exact match | 16 contacts → |
“Alliance Calibration is centrally located in Cincinnati, Ohio.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  F. D. Hurka Metrologyfdhurka.comHQ: Charlotte, NC, United StatesReported employees: 11-50 | Charlotte, NC, United States | 11-50 | Exact match | 15 contacts → |
“F.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Werbel Microwave LLCwerbelmicrowave.comHQ: Whippany, NJ, United StatesReported employees: 11-50 | Whippany, NJ, United States | 11-50 | Exact match | 14 contacts → |
“Werbel Microwave LLC specializes in creating high-performance RF and microwave products for various applications, including military and commercial use.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Tra-Caltra-cal.comHQ: Gaithersburg, MD, United StatesReported employees: 11-50 | Gaithersburg, MD, United States | 11-50 | Exact match | 14 contacts → |
“Tra-Cal is a leading ISO-17025 accredited calibration lab serving 200+ customers including NASA, the DoD, Research Institutions, Satellite and Telecommunications providers, Life…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Western States Calibrationwesterncal.comHQ: Salt Lake City, UT, United StatesReported employees: 11-50 | Salt Lake City, UT, United States | 11-50 | Exact match | 13 contacts → |
“Western States Calibration is a leading provider of consumer services based out Salt Lake City, Utah, specializing in the science of measurement.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Precision Labs Calibrationthecallab.comHQ: Palmdale, CA, United StatesReported employees: 11-50 | Palmdale, CA, United States | 11-50 | Exact match | 13 contacts → |
“Precision Labs is a calibration service company operating in a accredited ISO 17025 quality environment.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Hayes Instrument Servicehayesinstruments.comHQ: Billerica, MA, United StatesReported employees: 11-50 | Billerica, MA, United States | 11-50 | Exact match | 13 contacts → |
“We shall provide superior calibration and repair services while continuously improving customer service and excellence in quality and reliability.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  OCS Technologiesocscal.comHQ: Cleveland, OH, United StatesReported employees: 11-50 | Cleveland, OH, United States | 11-50 | Exact match | 12 contacts → |
“OCS Technologies was founded as Ohio Counting Scale in 1930 and has grown into a multi-disciplined calibration service provider and leading product distributor today.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Thermo-Temp, Incorporatedthermotemp.comHQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 11 contacts → |
“THERMO-TEMP, INCORPORATED is YOUR CALIBRATION RESOURCE!” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Holts Precision, INCholtsprecision.comHQ: South Windsor, CT, United StatesReported employees: 11-50 | South Windsor, CT, United States | 11-50 | Exact match | 9 contacts → |
“At Holts Precision, Inc.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | A & P Calibrations INCapcalibrations.com HQ: Pleasanton, CA, United StatesReported employees: 1-10 | Pleasanton, CA, United States | 1-10 | Exact match | 9 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 |  Accura Calibrationaccuracal.comHQ: Garland, TX, United StatesReported employees: 11-50 | Garland, TX, United States | 11-50 | Exact match | 8 contacts → |
“Accura Calibration is a service-oriented calibration lab specializing in a wide range of measurement and test equipment.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Southwest Calibration Service, INCswcal.comHQ: Stafford, TX, United StatesReported employees: 11-50 | Stafford, TX, United States | 11-50 | Exact match | 8 contacts → |
“Founded in 1988, Southwest Calibration Service supports the test and measurement needs of manufacturers across energy, aerospace, pharmaceutical, industrial, and chemical…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Utah Scale Centerutahscalecenter.comHQ: Sandy, UT, United StatesReported employees: 11-50 | Sandy, UT, United States | 11-50 | Exact match | 8 contacts → |
“We are ISO-17025 accredited and licensed to work in all the states we operate in.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Keli Labskelilabs.comHQ: Dallas, FL, United StatesReported employees: 51-200 | Dallas, FL, United States | 51-200 | Exact match | 8 contacts → |
“KELI Labs is a trusted calibration partner for some of the world’s leading organizations across aviation, aerospace, defense, and manufacturing.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Precision Calibration Systems, LLCpcsllctn.comHQ: Morristown, TN, United StatesReported employees: 11-50 | Morristown, TN, United States | 11-50 | Exact match | 7 contacts → |
“Precision Calibration Systems "PCS" is a full service ISO/IEC 17025 Accredited calibration laboratory located in Morristown,Tennessee.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Calyx Metrology Laboratorycalyxmet.comHQ: State College, PA, United StatesReported employees: 1-10 | State College, PA, United States | 1-10 | Exact match | 7 contacts → |
“Calyx helps HTM’s improve the quality of patient care, reduce risks and contain the cost of healthcare.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 76 company matches
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Directional coupler calibration services: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
76 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 76 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for directional coupler calibration services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many directional coupler calibration services did RevenueBase find based in the United States?
The saved snapshot records 76 matching company records, 834 tracked contacts and 324 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cite this list
RevenueBase Data Team. Top 25 directional coupler calibration services based in the United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/directional-coupler-calibration-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Oil and gas companies based in the United States
- Utilities based in the United States
- 3d printing companies based in the United States
Company intelligence · public preview
Top 25 directional coupler calibration services based in the United States
RevenueBase records 76 matching company records for directional coupler calibration services based in the United States, with 834 tracked contacts and 324 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 directional coupler calibration services based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Standard Calibrations, INCstandardcal.com HQ: Chesapeake, VA, United StatesReported employees: 51-200 | Chesapeake, VA, United States | 51-200 | Exact match | 100 contacts → |
“Every Measurement Matters.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Essco Calibration Laboratoryesscolab.com HQ: Chelmsford, MA, United StatesReported employees: 51-200 | Chelmsford, MA, United States | 51-200 | Exact match | 87 contacts → |
“Essco Calibration Laboratory provides calibration services for a wide variety of commercial test equipment.Capabilities include electronic, mechanical, fiber-optic…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Constellation Powerlabsconstellationpowerlabs.com HQ: Coatesville, IL, United StatesReported employees: 51-200 | Coatesville, IL, United States | 51-200 | Exact match | 67 contacts → |
“Constellation PowerLabs has been performing quality calibrations and testing services since 1911.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Cal-Certcal-cert.com HQ: Milwaukie, OR, United StatesReported employees: 11-50 | Milwaukie, OR, United States | 11-50 | Exact match | 36 contacts → |
“Cal-Cert has provided high quality, professional calibration services to the materials testing industry for over 40 years and is currently accredited to ISO/IEC17025 through IAS…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | ETI Precisionetiprecision.com HQ: Frederick, MD, United StatesReported employees: 51-200 | Frederick, MD, United States | 51-200 | Exact match | 34 contacts → |
“Electrical Test Instruments (ETI) is a leader in the calibration, repair, and sale of test and measurement equipment.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Assurance Technologiesatiquality.com HQ: Elgin, IL, United StatesReported employees: 11-50 | Elgin, IL, United States | 11-50 | Exact match | 32 contacts → |
“Assurance Technologies, Inc.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | American Calibrationamericancalibration.com HQ: Fox River Grove, IL, United StatesReported employees: 11-50 | Fox River Grove, IL, United States | 11-50 | Exact match | 29 contacts → |
“American Calibration Inc.(ACI), part of the Concept family of companies, is proudly expanding and has been serving the industry coast-to-coast for over 30 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | American Gageamericangage.com HQ: Placentia, CA, United StatesReported employees: 11-50 | Placentia, CA, United States | 11-50 | Exact match | 17 contacts → |
“American Gage is a leading metrology laboratory in Southern California serving the Life Science & Aerospace industry for over 50 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Alliance Calibrationalliancecalibration.com HQ: Cincinnati, OH, United StatesReported employees: 11-50 | Cincinnati, OH, United States | 11-50 | Exact match | 16 contacts → |
“Alliance Calibration is centrally located in Cincinnati, Ohio.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | F. D. Hurka Metrologyfdhurka.com HQ: Charlotte, NC, United StatesReported employees: 11-50 | Charlotte, NC, United States | 11-50 | Exact match | 15 contacts → |
“F.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Werbel Microwave LLCwerbelmicrowave.com HQ: Whippany, NJ, United StatesReported employees: 11-50 | Whippany, NJ, United States | 11-50 | Exact match | 14 contacts → |
“Werbel Microwave LLC specializes in creating high-performance RF and microwave products for various applications, including military and commercial use.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Tra-Caltra-cal.com HQ: Gaithersburg, MD, United StatesReported employees: 11-50 | Gaithersburg, MD, United States | 11-50 | Exact match | 14 contacts → |
“Tra-Cal is a leading ISO-17025 accredited calibration lab serving 200+ customers including NASA, the DoD, Research Institutions, Satellite and Telecommunications providers, Life…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Western States Calibrationwesterncal.com HQ: Salt Lake City, UT, United StatesReported employees: 11-50 | Salt Lake City, UT, United States | 11-50 | Exact match | 13 contacts → |
“Western States Calibration is a leading provider of consumer services based out Salt Lake City, Utah, specializing in the science of measurement.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Precision Labs Calibrationthecallab.com HQ: Palmdale, CA, United StatesReported employees: 11-50 | Palmdale, CA, United States | 11-50 | Exact match | 13 contacts → |
“Precision Labs is a calibration service company operating in a accredited ISO 17025 quality environment.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Hayes Instrument Servicehayesinstruments.com HQ: Billerica, MA, United StatesReported employees: 11-50 | Billerica, MA, United States | 11-50 | Exact match | 13 contacts → |
“We shall provide superior calibration and repair services while continuously improving customer service and excellence in quality and reliability.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | OCS Technologiesocscal.com HQ: Cleveland, OH, United StatesReported employees: 11-50 | Cleveland, OH, United States | 11-50 | Exact match | 12 contacts → |
“OCS Technologies was founded as Ohio Counting Scale in 1930 and has grown into a multi-disciplined calibration service provider and leading product distributor today.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Thermo-Temp, Incorporatedthermotemp.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 11 contacts → |
“THERMO-TEMP, INCORPORATED is YOUR CALIBRATION RESOURCE!” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Holts Precision, INCholtsprecision.com HQ: South Windsor, CT, United StatesReported employees: 11-50 | South Windsor, CT, United States | 11-50 | Exact match | 9 contacts → |
“At Holts Precision, Inc.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | A & P Calibrations INCapcalibrations.com HQ: Pleasanton, CA, United StatesReported employees: 1-10 | Pleasanton, CA, United States | 1-10 | Exact match | 9 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Accura Calibrationaccuracal.com HQ: Garland, TX, United StatesReported employees: 11-50 | Garland, TX, United States | 11-50 | Exact match | 8 contacts → |
“Accura Calibration is a service-oriented calibration lab specializing in a wide range of measurement and test equipment.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Southwest Calibration Service, INCswcal.com HQ: Stafford, TX, United StatesReported employees: 11-50 | Stafford, TX, United States | 11-50 | Exact match | 8 contacts → |
“Founded in 1988, Southwest Calibration Service supports the test and measurement needs of manufacturers across energy, aerospace, pharmaceutical, industrial, and chemical…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Utah Scale Centerutahscalecenter.com HQ: Sandy, UT, United StatesReported employees: 11-50 | Sandy, UT, United States | 11-50 | Exact match | 8 contacts → |
“We are ISO-17025 accredited and licensed to work in all the states we operate in.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Keli Labskelilabs.com HQ: Dallas, FL, United StatesReported employees: 51-200 | Dallas, FL, United States | 51-200 | Exact match | 8 contacts → |
“KELI Labs is a trusted calibration partner for some of the world’s leading organizations across aviation, aerospace, defense, and manufacturing.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Precision Calibration Systems, LLCpcsllctn.com HQ: Morristown, TN, United StatesReported employees: 11-50 | Morristown, TN, United States | 11-50 | Exact match | 7 contacts → |
“Precision Calibration Systems "PCS" is a full service ISO/IEC 17025 Accredited calibration laboratory located in Morristown,Tennessee.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Calyx Metrology Laboratorycalyxmet.com HQ: State College, PA, United StatesReported employees: 1-10 | State College, PA, United States | 1-10 | Exact match | 7 contacts → |
“Calyx helps HTM’s improve the quality of patient care, reduce risks and contain the cost of healthcare.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 76 company matches
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Directional coupler calibration services: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
76 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 76 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for directional coupler calibration services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many directional coupler calibration services did RevenueBase find based in the United States?
The saved snapshot records 76 matching company records, 834 tracked contacts and 324 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cite this list
RevenueBase Data Team. Top 25 directional coupler calibration services based in the United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/directional-coupler-calibration-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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