Company lists · Data refreshed November 2026

Top 25 Pump calibration services based in the United States

RevenueBase identified 129 company matches for pump calibration services associated with the United States as of November 2026 and tracks 1,986 professional contacts across them, including 918 with verified work emails. Houston is the largest hub.

This list covers company matches for pump 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 6, 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 6, 2026 How this list was built
129Companies
1,986Contacts tracked
918Verified emails
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The 25 largest pump calibration services based in the United States

Ranked by team size
Top 25 of 129 company matches for pump calibration services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchRochester, NY, United StatesHQ recorded Nov 6, 2026501-1,000718 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 6, 2026 · View company records in RevenueBase
2Exact matchChesapeake, VA, United StatesHQ recorded Nov 6, 202651-200100 contacts →

Exact match

“Every Measurement Matters.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchChelmsford, MA, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
4Exact matchVista, CA, United StatesHQ recorded Nov 6, 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 6, 2026 · View company records in RevenueBase
5Exact matchCoatesville, IL, United StatesHQ recorded Nov 6, 202651-20067 contacts →

Exact match

“Constellation PowerLabs has been performing quality calibrations and testing services since 1911.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchDallas, TX, United StatesHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“The Aldinger Company is a full-service measurement and test equipment calibration, sales, and service provider with over 50 years of experience servicing Texas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchDallas, TX, United StatesHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Nicol Scales & Measurement is an ISO 17025 Accredited Calibration Company that has provided calibration, repair, and sales of all types of weighing and measurement products since…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMilwaukie, OR, United StatesHQ recorded Nov 6, 202611-5036 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 6, 2026 · View company records in RevenueBase
9Exact matchFrederick, MD, United StatesHQ recorded Nov 6, 202651-20034 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 6, 2026 · View company records in RevenueBase
10Exact matchBaltimore, CA, United StatesHQ recorded Nov 6, 2026201-50034 contacts →

Exact match

“Davis Calibration is the leader in providing calibration, quality assurance, and asset management services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLititz, PA, United StatesHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“Garber Metrology is a family owned business and has earned the Pennsylvania “Best Place to Work” title.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchFox River Grove, IL, United StatesHQ recorded Nov 6, 202611-5029 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 6, 2026 · View company records in RevenueBase
13Exact matchMilford, MA, United StatesHQ recorded Nov 6, 202651-20025 contacts →

Exact match

“Transcat Pipettes is a trusted, single-source provider of accredited pipette calibration services and distributor of high-quality pipette supplies to scientific research…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchEverett, WA, United StatesHQ recorded Nov 6, 20261,001-5,00024 contacts →

Exact match

“Fluke Calibration is a leader in precision calibration instrumentation and software for electrical, temperature, pressure, flow and RF measurements.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchNunn, CO, United StatesHQ recorded Nov 6, 202651-20020 contacts →

Exact match

“Colorado Engineering Experiment Station Inc.(CEESI) assists commercial and industrial clients by providing market-leading flow measurement and testing expertise.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchQuakertown, FL, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“C&W Meter Service assists commercial and industrial clients by providing custody transfer and flow measurement proving services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSignal Hill, CA, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchRoselle, IL, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Graftel assists commercial and industrial clients by providing flow meter measurement/certification services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchCincinnati, OH, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Alliance Calibration is centrally located in Cincinnati, Ohio.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchCharlotte, NC, United StatesHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“F.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNashville, TN, United StatesHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“LabtronX is a laboratory equipment calibration, maintenance, and repair company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSalt Lake City, UT, United StatesHQ recorded Nov 6, 202611-5013 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 6, 2026 · View company records in RevenueBase
23Exact matchPalmdale, CA, United StatesHQ recorded Nov 6, 202611-5013 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 6, 2026 · View company records in RevenueBase
24Exact matchBillerica, MA, United StatesHQ recorded Nov 6, 202611-5013 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 6, 2026 · View company records in RevenueBase
25Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“THERMO-TEMP, INCORPORATED is YOUR CALIBRATION RESOURCE!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 129 pump calibration services based in the United States

See the full list, filter by size, metro and specialty, and access 918 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Pump calibration services based in the United States at a glance

As of Nov 6, 2026
46.2%Verified-email coverage
15.4Average contacts per company
11-50Median size (employees)
6.2%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
59
11-50
55
51-200
12
201-500
1
501-1,000
1
1,001-5,000
1

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 129 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 “pump 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 918 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 6, 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 “pump calibration services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many pump calibration services are there based in the United States?

RevenueBase identified 129 company matches for pump 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?

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

Which city has the most pump calibration services?

Houston leads with 8 company records, followed by Rochester (3) and Baton Rouge (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 918 professional contacts with verified work emails tracked across these 129 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 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 129 pump 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.