Company lists · Data refreshed November 2026

Top 25 Well test and monitoring instrument suppliers based in the United States

RevenueBase identified 417 company matches for well test and monitoring instrument suppliers associated with the United States as of November 2026 and tracks 10,329 professional contacts across them, including 3,323 with verified work emails. Houston is the largest hub.

This list covers company matches for well test and monitoring instrument suppliers 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 3, 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 3, 2026 How this list was built
417Companies
10,329Contacts tracked
3,323Verified emails
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The 25 largest well test and monitoring instrument suppliers based in the United States

Ranked by team size
Top 25 of 417 company matches for well test and monitoring instrument suppliers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 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 matchNorwalk, CT, United StatesHQ recorded Nov 3, 2026501-1,000623 contacts →

Exact match

“Omega sells more than products used to measure temperature and humidity, flow and level, and pressure.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2Exact matchLogan, UT, United StatesHQ recorded Nov 3, 2026201-500567 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
3Exact matchHouston, TX, United StatesHQ recorded Nov 3, 2026201-500459 contacts →

Exact match

“Dresser Utility Solutions (formerly Dresser, Inc.) is a leading provider of measurement, instrumentation, piping solutions and over pressure protection devices to the natural gas…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4Exact matchStratford, CT, United StatesHQ recorded Nov 3, 20261,001-5,000402 contacts →

Exact match

“Ashcroft | Industrial Measurement & Control Solutions For over 170 years, Ashcroft has been the trusted global resource for industrial measurement and control.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Nov 3, 2026501-1,000384 contacts →

Exact match

“Express Energy Services, a leading oilfield services company, is active in every major hydrocarbon basin in the United States and is a premier provider of products and services…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Nov 3, 2026201-500295 contacts →

Exact match

“Greene’s Energy Group offers a range of support services and products to the oil and gas industry.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7Exact matchLevelland, TX, United StatesHQ recorded Nov 3, 2026501-1,000202 contacts →

Exact match

“Founded in 1980, Butch's has been leading the pack as the premier service provider for the oil and gas industry.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Nov 3, 2026201-500182 contacts →

Exact match

“Boasting three core businesses – Measurement Products & Accessories, Terminal Management & Automation, and Metering Systems - Guidant is the leader in liquids custody transfer…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9Exact matchHemet, CA, United StatesHQ recorded Nov 3, 2026201-500168 contacts →

Exact match

“McCrometer is a global leader in providing flow measurement solutions.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10Exact matchHouston, TX, United StatesHQ recorded Nov 3, 2026n/a163 contacts →

Exact match

“RohmTek is an analytical laboratory support company providing instrument rental, instrument optimization, and analytical laboratory services to the energy industry and beyond.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
11Exact matchHouston, United StatesHQ recorded Nov 3, 202651-200128 contacts →

Exact match

“Founded in 1980, Agar Corporation is a family owned operated business and a leading pioneer of process measurement and control systems and services within the energy sector.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12Exact matchLongview, TX, United StatesHQ recorded Nov 3, 2026201-500125 contacts →

Exact match

“Thomas Oilfield Services is committed to providing the best services and equipment in the oil and gas industry.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Nov 3, 2026201-500125 contacts →

Exact match

“Production Equipment & Measurement Experts Our Mission is to build the highest Quality and Best Value Oil & Gas Production & Measurement Equipment in the Industry.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
14Exact matchCorpus Christi, TX, United StatesHQ recorded Nov 3, 202651-200121 contacts →

Exact match

“Iron Horse Tools designs, tests, rents, and services pressure control equipment that enhances conventional and unconventional drilling performance.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
15Exact matchPinehurst, TX, United StatesHQ recorded Nov 3, 2026n/a110 contacts →

Exact match

“DHI Services provides the following well site services: Surface Data Logging, Drilling Instrumentation, Real-Time Data Delivery via the Internet, Mud Gas and Ambient Gas…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
16Exact matchFort Worth, TX, United StatesHQ recorded Nov 3, 2026201-500106 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17Exact matchHouma, United StatesHQ recorded Nov 3, 202651-200102 contacts →

Exact match

“QPS is a true full service company providing a variety of services throughout the United States and abroad.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
18Exact matchChesapeake, VA, United StatesHQ recorded Nov 3, 202651-200100 contacts →

Exact match

“Every Measurement Matters.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
19Exact matchLebanon, NH, United StatesHQ recorded Nov 3, 202651-20099 contacts →

Exact match

“GEOKON is a recognized world leader in the manufacture of geotechnical and structural instrumentation.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
20Exact matchBroussard, LA, United StatesHQ recorded Nov 3, 202651-20098 contacts →

Exact match

“Oilfield Instrumentation is a best-in-class provider of real time drilling instrumentation and certified offshore and land buildings for the oil and gas industry.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
21Exact matchSan Diego, CA, United StatesHQ recorded Nov 3, 202651-20092 contacts →

Exact match

“Reotemp is a globally recognized manufacturer of temperature and pressure instrumentation.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
22Exact matchHouston, TX, United StatesHQ recorded Nov 3, 2026201-50079 contacts →

Exact match

“With a century of experience, Daniel is the only manufacturer that has the knowledge and expertise to engineer and offer superior products that provide the most reliable and…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
23Exact matchHouston, TX, United StatesHQ recorded Nov 3, 202651-20078 contacts →

Exact match

“Coastal Flow is the industry-leading liquid and gas measurement company, providing quality measurement services since 1974.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
24Exact matchCrowley, LA, United StatesHQ recorded Nov 3, 202651-20077 contacts →

Exact match

“Jaguar Energy Services was founded in 2011, bringing with them decades of executive experience and technical expertise that touched every corner of the oil and gas industry…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
25Exact matchSan Marcos, TX, United StatesHQ recorded Nov 3, 202651-20075 contacts →

Exact match

“Since 1969, Mensor has been a trusted leader in precision pressure calibration and measurement, delivering innovative solutions that help industries worldwide maintain accuracy…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase

Showing 25 of 417 well test and monitoring instrument suppliers based in the United States

See the full list, filter by size, metro and specialty, and access 3,323 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Well test and monitoring instrument suppliers based in the United States at a glance

As of Nov 3, 2026
32.2%Verified-email coverage
24.8Average contacts per company
11-50Median size (employees)
13.7%Largest-city concentration · Houston
Nov 3, 2026Page data refreshed

Companies by employee count

1-10
147
11-50
150
51-200
88
201-500
21
501-1,000
6
1,001-5,000
1
5,001-10,000
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 417 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 “well test and monitoring instrument suppliers” 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 3,323 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 3, 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.

Well test and monitoring instrument suppliers by metro

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 “well test and monitoring instrument suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many well test and monitoring instrument suppliers are there based in the United States?

RevenueBase identified 417 company matches for well test and monitoring instrument suppliers 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?

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

Which city has the most well test and monitoring instrument suppliers?

Houston leads with 57 company records, followed by Midland (12) and Odessa (11).

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 3,323 professional contacts with verified work emails tracked across these 417 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 3, 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.