Company lists · Data refreshed September 2026

Top 25 Metrology and calibration services based in the United States

Name: Metrology and calibration services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 758 companies tracked

RevenueBase identified 758 metrology and calibration services headquartered in the United States as of September 2026 and tracks 11,737 professional contacts across them, including 4,641 with verified work emails. Houston is the largest hub.

This list covers metrology and calibration services headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

758Companies

11,737Contacts tracked

4,641Verified emails

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The 25 largest metrology and calibration services based in the United States

Ranked by team size

Top 25 of 758 metrology and calibration services based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to metrology and calibration services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Applied Technical Services, LLC	Partial evidence	Marietta, GA, United StatesHQ checked Sep 20, 2026	1,001-5,000	890 contacts →
	Partial evidence “Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.” Source: RevenueBase Database · checked Sep 20, 2026
2	Transcat	Partial evidence	Rochester, NY, United StatesHQ checked Sep 20, 2026	501-1,000	673 contacts →
	Partial evidence “At Transcat, we are the global leader in test and measurement equipment and calibration services for highly technical industries, including life sciences, power generation…” Source: RevenueBase Database · checked Sep 20, 2026
3	Micro Precision Calibration	Partial evidence	Grass Valley, CA, United StatesHQ checked Sep 20, 2026	201-500	480 contacts →
	Partial evidence “Micro Precision Calibration is a global leader offering customers around the world an easy path to instrument calibration services, standards compliance testing, equipment repair…” Source: RevenueBase Database · checked Sep 20, 2026
4	ZYGO	Partial evidence	Middlefield, CT, United StatesHQ checked Sep 20, 2026	501-1,000	451 contacts →
	Partial evidence “Zygo is the global leader in the design and manufacture of advanced optical metrology systems and ultra-precise optical components and assemblies.” Source: RevenueBase Database · checked Sep 20, 2026
5	Mitutoyo America Corporation	Partial evidence	Aurora, IL, United StatesHQ checked Sep 20, 2026	201-500	435 contacts →
	Partial evidence “The world’s largest metrology company was founded in 1934 by Yehan Numata with one product – the micrometer.” Source: RevenueBase Database · checked Sep 20, 2026
6	Simco Electronics	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 20, 2026	201-500	391 contacts →
	Partial evidence “SIMCO Electronics is a leading provider of calibration, repair, and software services for manufacturing, life science, and technology organizations.” Source: RevenueBase Database · checked Sep 20, 2026
7	ATT Metrology Solutions	Partial evidence	Issaquah, WA, United StatesHQ checked Sep 20, 2026	51-200	212 contacts →
	Partial evidence “Mission: Offer full metrology solutions to our customers – which will reduce costs and improve quality significantly in their broader value chain.” Source: RevenueBase Database · checked Sep 20, 2026
8	PCI	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 20, 2026	51-200	198 contacts →
	Partial evidence “PCI provides calibration, commissioning, and consulting solutions for the life sciences industry.” Source: RevenueBase Database · checked Sep 20, 2026
9	Michelli Weighing & Measurement	Indirect evidence	Harahan, LA, United StatesHQ checked Sep 20, 2026	51-200	175 contacts →
	Indirect evidence “Michelli Weighing & Measurement provides services & equipment related to scales & measurement equipment.” Source: RevenueBase Database · checked Sep 20, 2026
10	Quartus Engineering	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 20, 2026	51-200	153 contacts →
	Indirect evidence “At Quartus, our multi-disciplinary team collaborates to deliver high-quality engineered solutions and products that help our clients change the world.” Source: RevenueBase Database · checked Sep 20, 2026
11	MSI Viking	Partial evidence	Greer, SC, United StatesHQ checked Sep 20, 2026	51-200	144 contacts →
	Partial evidence “MSI-Viking Gage is a leading supplier of precision measuring technologies representing the world's leading metrology and automation suppliers - including Hexagon, Mitutoyo…” Source: RevenueBase Database · checked Sep 20, 2026
12	FOX Valley Metrology	Partial evidence	Oshkosh, WI, United StatesHQ checked Sep 20, 2026	51-200	127 contacts →
	Partial evidence “Fox Valley Metrology is a partner to the Quality Assurance Departments of thousands of organizations worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
13	Rothe Development INC	Strong evidence	Webster, TX, United StatesHQ checked Sep 20, 2026	201-500	127 contacts →
	Strong evidence “Since 1967, Rothe has delivered precision-driven solutions in calibration & metrology, engineering, and IT services to a wide range of commercial and industrial sectors.” Source: RevenueBase Database · checked Sep 20, 2026
14	API Metrology	Partial evidence	Rockville, MD, United StatesHQ checked Sep 20, 2026	201-500	125 contacts →
	Partial evidence “For more than three decades, API’s advanced dimensional metrology equipment has developed customized solutions for leading companies, like Boeing, Lockheed Martin, Northrop…” Source: RevenueBase Database · checked Sep 20, 2026
15	Black Label Services, INC	Indirect evidence	Windsor, CO, United StatesHQ checked Sep 20, 2026	201-500	117 contacts →
	Indirect evidence “At Black Label Services, we pride ourselves on delivering cutting-edge and customized services to meet the unique needs of our clients across various industries.” Source: RevenueBase Database · checked Sep 20, 2026
16	Technical Maintenance, INC	Indirect evidence	Temple Terrace, GA, United StatesHQ checked Sep 20, 2026	51-200	111 contacts →
	Indirect evidence “Who is TMI?” Source: RevenueBase Database · checked Sep 20, 2026
17	System Scale Corporation	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 20, 2026	51-200	105 contacts →
	Partial evidence “System Scale is an industrial weighing and calibration company built for facilities that cannot afford inaccurate measurements, unplanned downtime, or audit failures.” Source: RevenueBase Database · checked Sep 20, 2026
18	Mahr INC	Partial evidence	Providence, RI, United StatesHQ checked Sep 20, 2026	51-200	102 contacts →
	Partial evidence “When customers are faced with a metrology need, they turn to Mahr Inc, for unmatched industry expertise.” Source: RevenueBase Database · checked Sep 20, 2026
19	Standard Calibrations, INC	Indirect evidence	Chesapeake, VA, United StatesHQ checked Sep 20, 2026	51-200	95 contacts →
	Indirect evidence “Every Measurement Matters.” Source: RevenueBase Database · checked Sep 20, 2026
20	Oasis Alignment Services A Division Of In-Place Machining Company	Indirect evidence	Rochester, NH, United StatesHQ checked Sep 20, 2026	51-200	94 contacts →
	Indirect evidence “Precision alignment of equipment and process lines can significantly reduce or even eliminate many of the issues manufacturers face on a daily basis.” Source: RevenueBase Database · checked Sep 20, 2026
21	Radian Research, INC	Indirect evidence	Lafayette, IN, United StatesHQ checked Sep 20, 2026	201-500	93 contacts →
	Indirect evidence “Radian Research Company Overview Radian Research is a recognized world leader in Energy Reference Standards, Energy Meter Testing Systems, Current Transformer Testers, Meter Test…” Source: RevenueBase Database · checked Sep 20, 2026
22	Balance Technology INC BTI	Indirect evidence	Whitmore Lake, MI, United StatesHQ checked Sep 20, 2026	51-200	91 contacts →
	Indirect evidence “Since 1968.Celebrating 50 Years!” Source: RevenueBase Database · checked Sep 20, 2026
23	Intra Corporation	Indirect evidence	Westland, MI, United StatesHQ checked Sep 20, 2026	51-200	91 contacts →
	Indirect evidence “Precision Measurement System Intra Corporation is a total solution provider of precision measurement systems and related services to the machine tool industry worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
24	Technical Diagnostic Services	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 20, 2026	201-500	91 contacts →
	Indirect evidence “For over 25 years, Sentinel-TDS, based in Dallas/Ft.” Source: RevenueBase Database · checked Sep 20, 2026
25	Troemner, LLC	Partial evidence	Thorofare, NJ, United StatesHQ checked Sep 20, 2026	51-200	89 contacts →
	Partial evidence “The Troemner Advantage: Troemner is the world's leading supplier of precision weights and mass calibration standards.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: metrology and calibration services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names metrology and calibration services.
Partial evidence: Its own public description names part of metrology and calibration services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name metrology and calibration services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 758 metrology and calibration services based in the United States

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Metrology and calibration services based in the United States at a glance

As of Sep 20, 2026

39.5%Verified-email coverage

15.5Average contacts per company

1-10Median size (employees)

3.2%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

387

11-50

269

51-200

201-500

501-1,000

1,001-5,000

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 758 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among metrology and calibration services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “metrology and calibration services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names metrology and calibration services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among metrology and calibration services, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 4,641 across the full list. 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 September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names metrology and calibration services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 758 metrology and calibration services headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Applied Technical Services, LLC, headquartered in Marietta, tops this list with the largest team on record.

Which city has the most metrology and calibration services?

Houston leads with 24 headquartered companies, followed by San Diego (9) and Dallas (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,641 verified decision-maker contacts tracked across these 758 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 Smart Search, 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.