Company lists · Data refreshed September 2026

Top 25 Custom test equipment manufacturers based in the United States

Name: Custom test equipment manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 634 companies tracked

RevenueBase identified 634 custom test equipment manufacturers headquartered in the United States as of September 2026 and tracks 38,847 professional contacts across them, including 14,940 with verified work emails. San Jose is the largest hub.

This list covers custom test equipment manufacturers 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 30, 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 30, 2026 86% judged on-target in blind review

634Companies

38,847Contacts tracked

14,940Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest custom test equipment manufacturers based in the United States

Ranked by team size

Top 25 of 634 custom test equipment manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to custom test equipment manufacturers: 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	Keysight Technologies	Indirect evidence	Santa Rosa, CA, United StatesHQ checked Sep 30, 2026	10001+	11,668 contacts →
	Indirect evidence “Keysight empowers innovators to explore, design, and bring world-changing technologies to life.” Source: RevenueBase Database · checked Sep 30, 2026
2	NI National Instruments	Partial evidence	Austin, TX, United StatesHQ checked Sep 30, 2026	5,001-10,000	7,081 contacts →
	Partial evidence “In 2023, Emerson acquired NI and introduced its new Test & Measurement business group.” Source: RevenueBase Database · checked Sep 30, 2026
3	Tektronix	Strong evidence	Beaverton, OR, United StatesHQ checked Sep 30, 2026	1,001-5,000	3,355 contacts →
	Strong evidence “We design and manufacture test and measurement solutions to break through the walls of complexity and accelerate global innovation.” Source: RevenueBase Database · checked Sep 30, 2026
4	Fluke Corporation	Strong evidence	Everett, WA, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,931 contacts →
	Strong evidence “Fluke Corporation, a wholly owned subsidiary of Fortive Corporation (NYSE: FTV), is the world leader in the manufacture, distribution and service of electronic test tools and…” Source: RevenueBase Database · checked Sep 30, 2026
5	Instron	Strong evidence	Norwood, MA, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,015 contacts →
	Strong evidence “Instron manufactures and services a wide range of cutting-edge materials testing equipment used by research scientists, design engineers, and quality control managers.” Source: RevenueBase Database · checked Sep 30, 2026
6	NTS	Indirect evidence	Belcamp, MD, United StatesHQ checked Sep 30, 2026	201-500	915 contacts →
	Indirect evidence “Element U.S.” Source: RevenueBase Database · checked Sep 30, 2026
7	Transcat	Strong evidence	Rochester, NY, United StatesHQ checked Sep 30, 2026	501-1,000	673 contacts →
	Strong 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 30, 2026
8	Link Engineering Company	Partial evidence	Plymouth, MI, United StatesHQ checked Sep 30, 2026	501-1,000	509 contacts →
	Partial evidence “Link Group, Inc.(LINK), parent to Link Engineering Company, Link Industries and Tescor, consists of businesses that offer customized solutions, with a focus on delivering high…” Source: RevenueBase Database · checked Sep 30, 2026
9	Micro Precision Calibration	Strong evidence	Grass Valley, CA, United StatesHQ checked Sep 30, 2026	201-500	480 contacts →
	Strong 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 30, 2026
10	Industrial Physics	Indirect evidence	New Albany, IN, United StatesHQ checked Sep 30, 2026	201-500	430 contacts →
	Indirect evidence “At Industrial Physics, we protect the integrity of quality control, R&D, and operations experts across various industries.” Source: RevenueBase Database · checked Sep 30, 2026
11	Simco Electronics	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 30, 2026	201-500	391 contacts →
	Indirect 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 30, 2026
12	MGA Research Corporation	Partial evidence	Akron, NY, United StatesHQ checked Sep 30, 2026	201-500	224 contacts →
	Partial evidence “MGA is recognized worldwide as one of the leading independent providers of testing services and equipment.” Source: RevenueBase Database · checked Sep 30, 2026
13	GES	Partial evidence	San Jose, CA, United StatesHQ checked Sep 30, 2026	501-1,000	186 contacts →
	Partial evidence “GES is among the global leaders in automation, test and measurement.” Source: RevenueBase Database · checked Sep 30, 2026
14	Thermotron Industries	Strong evidence	Holland, MI, United StatesHQ checked Sep 30, 2026	201-500	164 contacts →
	Strong evidence “For more than 55 years, Thermotron has provided quality environmental test equipment.” Source: RevenueBase Database · checked Sep 30, 2026
15	Lamotte Company	Strong evidence	Chestertown, MD, United StatesHQ checked Sep 30, 2026	201-500	154 contacts →
	Strong evidence “Since 1919, we are a leading manufacturer of environmental testing equipment for water and soil.” Source: RevenueBase Database · checked Sep 30, 2026
16	Trialon Corporation	Indirect evidence	Burton, MI, United StatesHQ checked Sep 30, 2026	501-1,000	154 contacts →
	Indirect evidence “Trialon is now Element!” Source: RevenueBase Database · checked Sep 30, 2026
17	Chroma Systems Solutions, INC	Partial evidence	Foothill Ranch, CA, United StatesHQ checked Sep 30, 2026	51-200	153 contacts →
	Partial evidence “Chroma is the largest worldwide provider of power test instruments and automated test systems.” Source: RevenueBase Database · checked Sep 30, 2026
18	Quartus Engineering	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 30, 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 30, 2026
19	Cascade Microtech	Indirect evidence	Beaverton, OR, United StatesHQ checked Sep 30, 2026	1,001-5,000	151 contacts →
	Indirect evidence “Cascade Microtech, Inc, was acquired by FormFactor in 2016.” Source: RevenueBase Database · checked Sep 30, 2026
20	MSI Viking	Indirect evidence	Greer, SC, United StatesHQ checked Sep 30, 2026	51-200	144 contacts →
	Indirect 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 30, 2026
21	Redviking, A Lincoln Electric Company	Strong evidence	Plymouth, MI, United StatesHQ checked Sep 30, 2026	51-200	135 contacts →
	Strong evidence “RedViking, a Lincoln Electric Company, delivers advanced manufacturing and test solutions that improve efficiency, flexibility, and quality for customers across aerospace…” Source: RevenueBase Database · checked Sep 30, 2026
22	Circuit Check INC	Partial evidence	Maple Grove, MN, United StatesHQ checked Sep 30, 2026	201-500	129 contacts →
	Partial evidence “Circuit Check is a leading provider of automated test systems and test fixtures for complex electronic products for the automotive, military/aerospace, medical, industrial, and…” Source: RevenueBase Database · checked Sep 30, 2026
23	Modern Industries INC	Partial evidence	Erie, PA, United StatesHQ checked Sep 30, 2026	201-500	129 contacts →
	Partial evidence “Modern Industries offers customers a single-source solution for precision contract machining, end-to-end complete materials testing lab, and the largest heat treating facility in…” Source: RevenueBase Database · checked Sep 30, 2026
24	Rothe Development INC	Indirect evidence	Webster, TX, United StatesHQ checked Sep 30, 2026	201-500	127 contacts →
	Indirect 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 30, 2026
25	Tinius Olsen	Strong evidence	Horsham, PA, United StatesHQ checked Sep 30, 2026	51-200	114 contacts →
	Strong evidence “At Tinius Olsen we specialize in the manufacture and supply of test systems to prove the performance and strength of raw materials including metals, alloys, composites, plastics…” Source: RevenueBase Database · checked Sep 30, 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: custom test equipment manufacturers. 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 custom test equipment manufacturers.
Partial evidence: Its own public description names part of custom test equipment manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom test equipment manufacturers. 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 634 custom test equipment manufacturers based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 14,940 reachable decision-makers.

Free signup · no credit card

View the full list →

Custom test equipment manufacturers based in the United States at a glance

As of Sep 30, 2026

38.5%Verified-email coverage

61.3Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · San Jose

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

251

11-50

239

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 634 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 custom test equipment manufacturers, 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 “custom test equipment manufacturers”. 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 custom test equipment manufacturers), 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 custom test equipment manufacturers, 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, 14,940 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 30, 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 custom test equipment manufacturers, 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 custom test equipment manufacturers are there based in the United States?

RevenueBase identified 634 custom test equipment manufacturers 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?

Keysight Technologies, headquartered in Santa Rosa, tops this list with the largest team on record.

Which city has the most custom test equipment manufacturers?

San Jose leads with 12 headquartered companies, followed by Irvine (10) and San Diego (8).

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 14,940 verified decision-maker contacts tracked across these 634 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 30, 2026.

Ready to reach these companies? Verified emails and direct dials for all 634 custom test equipment manufacturers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Custom test equipment manufacturers by geography

Browse the directory

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.