Company lists · Data refreshed September 2026

Top 25 Thermometer manufacturers based in the United States

Name: Thermometer 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 312 companies tracked

RevenueBase identified 312 thermometer manufacturers headquartered in the United States as of September 2026 and tracks 8,742 professional contacts across them, including 3,133 with verified work emails. Houston is the largest hub.

This list covers thermometer 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

312Companies

8,742Contacts tracked

3,133Verified emails

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The 25 largest thermometer manufacturers based in the United States

Ranked by team size

Top 25 of 312 thermometer 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 thermometer 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	TSI Incorporated	Indirect evidence	Shoreview, MN, United StatesHQ checked Sep 30, 2026	501-1,000	1,211 contacts →
	Indirect evidence “TSI Incorporated serves a global market by investigating, identifying and solving measurement problems.” Source: RevenueBase Database · checked Sep 30, 2026
2	SPX Technologies	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 30, 2026	1,001-5,000	615 contacts →
	Indirect evidence “ABOUT SPX SPX Technologies is a supplier of highly engineered products and technologies, holding leadership positions in the HVAC and detection and measurement markets.” Source: RevenueBase Database · checked Sep 30, 2026
3	Omega Engineering	Indirect evidence	Norwalk, CT, United StatesHQ checked Sep 30, 2026	501-1,000	582 contacts →
	Indirect evidence “Omega sells more than products used to measure temperature and humidity, flow and level, and pressure.” Source: RevenueBase Database · checked Sep 30, 2026
4	Hanna Instruments	Partial evidence	Smithfield, RI, United StatesHQ checked Sep 30, 2026	1,001-5,000	558 contacts →
	Partial evidence “Hanna Instruments, Inc is the world’s largest privately held manufacturer of analytical and scientific instruments.” Source: RevenueBase Database · checked Sep 30, 2026
5	Dwyeromega	Indirect evidence	Michigan City, IN, United StatesHQ checked Sep 30, 2026	1,001-5,000	557 contacts →
	Indirect evidence “DwyerOmega is a trusted global leader in sensing, instrumentation, and process control solutions, supporting HVAC, industrial, manufacturing, and research applications where…” Source: RevenueBase Database · checked Sep 30, 2026
6	Ashcroft INC	Indirect evidence	Stratford, CT, United StatesHQ checked Sep 30, 2026	1,001-5,000	381 contacts →
	Indirect evidence “Ashcroft \| Industrial Measurement & Control Solutions For over 170 years, Ashcroft has been the trusted global resource for industrial measurement and control.” Source: RevenueBase Database · checked Sep 30, 2026
7	Durex Industries	Indirect evidence	Cary, IL, United StatesHQ checked Sep 30, 2026	201-500	232 contacts →
	Indirect evidence “Durex Industries has over 40 years of excellence in designing and manufacturing custom thermal solutions.” Source: RevenueBase Database · checked Sep 30, 2026
8	Daily Thermetrics	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	151 contacts →
	Indirect evidence “Since 1973, Daily Thermetrics has provided the global process industries with category-leading temperature measurement solutions.” Source: RevenueBase Database · checked Sep 30, 2026
9	Alicat Scientific	Partial evidence	Tucson, AZ, United StatesHQ checked Sep 30, 2026	51-200	125 contacts →
	Partial evidence “Since 1991, Alicat Scientific has manufactured custom mass flow and pressure instrumentation to equip our customers with the tools they need to advance scientific discovery and…” Source: RevenueBase Database · checked Sep 30, 2026
10	Fieldpiece Instruments	Partial evidence	Orange, CA, United StatesHQ checked Sep 30, 2026	51-200	122 contacts →
	Partial evidence “Fieldpiece Instruments is the leading manufacturer of professional-grade tools for the HVACR industry, delivering quality instruments industry pros trust to help them do more…” Source: RevenueBase Database · checked Sep 30, 2026
11	BAPI	Partial evidence	Gays Mills, WI, United StatesHQ checked Sep 30, 2026	51-200	114 contacts →
	Partial evidence “Building Automation Products, Inc.(BAPI), designs and manufactures a wide variety of sensors and related products primarily for the HVAC industry.” Source: RevenueBase Database · checked Sep 30, 2026
12	Mpd, INC	Indirect evidence	Owensboro, KY, United StatesHQ checked Sep 30, 2026	201-500	105 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
13	Jewell Instruments	Partial evidence	Manchester, NH, United StatesHQ checked Sep 30, 2026	51-200	102 contacts →
	Partial evidence “Jewell Instruments is a world leader in the manufacture and distribution of acceleration and tilt sensors as well as avionics components, solenoids and panel meters.” Source: RevenueBase Database · checked Sep 30, 2026
14	Reotemp Instruments	Partial evidence	San Diego, CA, United StatesHQ checked Sep 30, 2026	51-200	94 contacts →
	Partial evidence “Reotemp is a globally recognized manufacturer of temperature and pressure instrumentation.” Source: RevenueBase Database · checked Sep 30, 2026
15	Anderson-Negele	Indirect evidence	Fultonville, NY, United StatesHQ checked Sep 30, 2026	201-500	93 contacts →
	Indirect evidence “Anderson-Negele is a global instrumentation and sensors company with the mission to provide the best hygienic instrumentation and sensors solutions and services for processors of…” Source: RevenueBase Database · checked Sep 30, 2026
16	TE Wire & Cable Llc, A Marmon Berkshire Hathaway Company	Partial evidence	Saddle Brook, NJ, United StatesHQ checked Sep 30, 2026	51-200	88 contacts →
	Partial evidence “TE Wire & Cable LLC a Marmon Wire & Cable/Berkshire Hathaway Company, is a premier Thermocouple and Specialty wire and cable manufacturer formed from the Wire and Cable Division…” Source: RevenueBase Database · checked Sep 30, 2026
17	Nielsen-Kellerman Company	Indirect evidence	Boothwyn, PA, United StatesHQ checked Sep 30, 2026	51-200	84 contacts →
	Indirect evidence “Nielsen-Kellerman, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
18	Pyromation	Indirect evidence	Fort Wayne, IN, United StatesHQ checked Sep 30, 2026	51-200	84 contacts →
	Indirect evidence “Pyromation began operations in 1962 and is one of the leading producers of temperature sensing devices and equipment in North America.” Source: RevenueBase Database · checked Sep 30, 2026
19	Thermoworks, INC	Indirect evidence	American Fork, UT, United StatesHQ checked Sep 30, 2026	51-200	80 contacts →
	Indirect evidence “With a new sq.” Source: RevenueBase Database · checked Sep 30, 2026
20	Tempco Electric Heater Corporation	Partial evidence	Wood Dale, IL, United StatesHQ checked Sep 30, 2026	201-500	75 contacts →
	Partial evidence “Founded in 1972, Tempco is a trusted manufacturer and designer specializing in high-quality electric heating elements, temperature sensors, and power control products for…” Source: RevenueBase Database · checked Sep 30, 2026
21	Kobold Instruments	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 30, 2026	11-50	70 contacts →
	Indirect evidence “For more than 40 years, KOBOLD has been a value-drive leader in process measurement and control solutions.” Source: RevenueBase Database · checked Sep 30, 2026
22	Polyscience	Indirect evidence	Niles, IL, United StatesHQ checked Sep 30, 2026	51-200	69 contacts →
	Indirect evidence “PolyScience is a leading producer of constant temperature control equipment.” Source: RevenueBase Database · checked Sep 30, 2026
23	GP 50 NY LTD	Partial evidence	Grand Island, NY, United StatesHQ checked Sep 30, 2026	51-200	63 contacts →
	Partial evidence “GP:50 is an AS9100D with ISO9001 certified leading designer and manufacturer of reliable and accurate pressure and temperature sensing products.” Source: RevenueBase Database · checked Sep 30, 2026
24	Sierra Instruments	Partial evidence	Monterey, CA, United StatesHQ checked Sep 30, 2026	51-200	60 contacts →
	Partial evidence “Sierra Instruments manufacturers high performance mass flow meters and mass flow controllers for nearly any gas, liquid, or steam application.” Source: RevenueBase Database · checked Sep 30, 2026
25	Rudolph Research Analytical	Indirect evidence	Hackettstown, NJ, United StatesHQ checked Sep 30, 2026	51-200	59 contacts →
	Indirect evidence “For over fifty years Rudolph has dedicated itself to manufacturing quality instruments and providing superior technical and service support.” 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: thermometer 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 thermometer manufacturers.
Partial evidence: Its own public description names part of thermometer manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name thermometer 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 312 thermometer manufacturers based in the United States

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Thermometer manufacturers based in the United States at a glance

As of Sep 30, 2026

35.8%Verified-email coverage

28.0Average contacts per company

11-50Median size (employees)

4.8%Largest-city concentration · Houston

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

106

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 312 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 thermometer 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 “thermometer 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 thermometer 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 thermometer 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, 3,133 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 thermometer 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 thermometer manufacturers are there based in the United States?

RevenueBase identified 312 thermometer 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?

TSI Incorporated, headquartered in Shoreview, tops this list with the largest team on record.

Which city has the most thermometer manufacturers?

Houston leads with 15 headquartered companies, followed by Cleveland (5) and San Diego (4).

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 3,133 verified decision-maker contacts tracked across these 312 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.

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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.