Company lists · Data refreshed November 2026

Top 25 Tester calibrating services based in the United States

RevenueBase identified 461 company matches for tester calibrating services associated with the United States as of November 2026 and tracks 23,372 professional contacts across them, including 9,205 with verified work emails. Houston is the largest hub.

This list covers company matches for tester calibrating 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 2, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 2, 2026 How this list was built
461Companies
23,372Contacts tracked
9,205Verified emails
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The 25 largest tester calibrating services based in the United States

Ranked by team size
Top 25 of 461 company matches for tester calibrating services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 2, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchNorthbrook, IL, United StatesHQ recorded Nov 2, 202610001+12,880 contacts →

Exact match

“A global leader in applied safety science, UL Solutions (NYSE: ULS) transforms safety, security and sustainability challenges into opportunities for customers in more than 110…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
2Exact matchMarietta, GA, United StatesHQ recorded Nov 2, 20261,001-5,000922 contacts →

Exact match

“Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
3Exact matchBoxborough, MA, United StatesHQ recorded Nov 2, 2026501-1,000743 contacts →

Exact match

“TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
4Exact matchRochester, NY, United StatesHQ recorded Nov 2, 2026501-1,000698 contacts →

Exact match

“At Transcat, we are the global leader in test and measurement equipment and calibration services for highly technical industries, including life sciences, power generation…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
5Exact matchGrass Valley, CA, United StatesHQ recorded Nov 2, 2026201-500513 contacts →

Exact match

“Micro Precision Calibration is a global leader offering customers around the world an easy path to instrument calibration services, standards compliance testing, equipment repair…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Nov 2, 2026501-1,000476 contacts →

Exact match

“SPL is a leading provider of compliance and testing services for Environmental, Energy, and other end markets.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
7Exact matchSan Diego, CA, United StatesHQ recorded Nov 2, 2026501-1,000406 contacts →

Exact match

“Technical Safety Services is a leading compliance, calibration and certification service provider for laboratories, hospitals, and pharmacies with locations across the United…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
8Exact matchSanta Clara, CA, United StatesHQ recorded Nov 2, 2026201-500392 contacts →

Exact match

“SIMCO Electronics is a leading provider of calibration, repair, and software services for manufacturing, life science, and technology organizations.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
9Exact matchAkron, OH, United StatesHQ recorded Nov 2, 2026501-1,000309 contacts →

Exact match

“Founded in 1925 and headquartered in Akron, Ohio, Smithers is a multinational provider of testing, consulting, information, and certification services.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
10Exact matchGolden, CO, United StatesHQ recorded Nov 2, 202651-200258 contacts →

Exact match

“For more than 40 years, Waters ERA has been providing analytical laboratories and organizations that rely on laboratory data with the products and services they need to achieve…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
11Exact matchAkron, NY, United StatesHQ recorded Nov 2, 2026201-500231 contacts →

Exact match

“MGA is recognized worldwide as one of the leading independent providers of testing services and equipment.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
12Exact matchBaltimore, MD, United StatesHQ recorded Nov 2, 2026201-500191 contacts →

Exact match

“Eurofins Electrical & Electronics North America is a leading testing and certification laboratory, providing a unique array of testing services and accreditations for regulatory…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
13Exact matchFrederick, MD, United StatesHQ recorded Nov 2, 202651-200135 contacts →

Exact match

“A2LA is a nonprofit, non-governmental, public service, membership society.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
14Exact matchWebster, TX, United StatesHQ recorded Nov 2, 2026201-500135 contacts →

Exact match

“Since 1967, Rothe has delivered precision-driven solutions in calibration & metrology, engineering, and IT services to a wide range of commercial and industrial sectors.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
15Exact matchOshkosh, WI, United StatesHQ recorded Nov 2, 202651-200123 contacts →

Exact match

“Fox Valley Metrology is a partner to the Quality Assurance Departments of thousands of organizations worldwide.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
16Exact matchTemple Terrace, GA, United StatesHQ recorded Nov 2, 202651-200112 contacts →

Exact match

“Who is TMI?”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
17Exact matchIndianapolis, IN, United StatesHQ recorded Nov 2, 202651-200107 contacts →

Exact match

“System Scale is an industrial weighing and calibration company built for facilities that cannot afford inaccurate measurements, unplanned downtime, or audit failures.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
18Exact matchFort Worth, TX, United StatesHQ recorded Nov 2, 2026201-500101 contacts →

Exact match

“For over 25 years, Sentinel-TDS, based in Dallas/Ft.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
19Exact matchThorofare, NJ, United StatesHQ recorded Nov 2, 202651-20097 contacts →

Exact match

“The Troemner Advantage: Troemner is the world's leading supplier of precision weights and mass calibration standards.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
20Exact matchChesapeake, VA, United StatesHQ recorded Nov 2, 202651-20095 contacts →

Exact match

“Every Measurement Matters.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
21Exact matchLafayette, IN, United StatesHQ recorded Nov 2, 2026201-50090 contacts →

Exact match

“Radian Research Company Overview Radian Research is a recognized world leader in Energy Reference Standards, Energy Meter Testing Systems, Current Transformer Testers, Meter Test…”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
22Exact matchChelmsford, MA, United StatesHQ recorded Nov 2, 202651-20087 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 2, 2026 · View company records in RevenueBase
23Exact matchBrea, CA, United StatesHQ recorded Nov 2, 202611-5086 contacts →

Exact match

“IAS accredits a wide range of companies and organizations including governmental entities, academia, commercial businesses, and professional associations.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
24Exact matchVista, CA, United StatesHQ recorded Nov 2, 202611-5068 contacts →

Exact match

“Techmaster was established in 1989 with the mission to provide calibrations performed through sound, ethical workmanship and to accommodate customer satisfaction.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
25Exact matchGrand Rapids, MI, United StatesHQ recorded Nov 2, 202651-20065 contacts →

Exact match

“Established in 1922, our core business has focused on providing our customers with prompt, professional, and precise Industrial Measurement Solutions.”

Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase

Showing 25 of 461 tester calibrating services based in the United States

See the full list, filter by size, metro and specialty, and access 9,205 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Tester calibrating services based in the United States at a glance

As of Nov 2, 2026
39.4%Verified-email coverage
50.7Average contacts per company
11-50Median size (employees)
3.9%Largest-city concentration · Houston
Nov 2, 2026Page data refreshed

Companies by employee count

1-10
197
11-50
183
51-200
51
201-500
13
501-1,000
10
1,001-5,000
5
10001+
2

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 461 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 “tester calibrating 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 9,205 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 2, 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 “tester calibrating services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many tester calibrating services are there based in the United States?

RevenueBase identified 461 company matches for tester calibrating 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?

UL Solutions tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most tester calibrating services?

Houston leads with 18 company records, followed by Dallas (8) and Minneapolis (6).

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 9,205 professional contacts with verified work emails tracked across these 461 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 2, 2026.

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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.