Company lists · Data refreshed October 2026

Top 25 Magnetometer geophysical instrument suppliers based in the United States

RevenueBase identified 82 company matches for magnetometer geophysical instrument suppliers associated with the United States as of October 2026 and tracks 794 professional contacts across them, including 324 with verified work emails. Houston is the largest hub.

This list covers company matches for magnetometer geophysical 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 October 27, 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 Oct 27, 2026 How this list was built
82Companies
794Contacts tracked
324Verified emails
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The 25 largest magnetometer geophysical instrument suppliers based in the United States

Ranked by team size
Top 25 of 82 company matches for magnetometer geophysical instrument suppliers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 27, 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 matchNashua, NH, United StatesHQ recorded Oct 27, 202651-200110 contacts →

Exact match

“Geophysical Survey Systems, Inc.(GSSI) is the world leader in the development of ground penetrating radar.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
2Exact matchReno, NV, United StatesHQ recorded Oct 27, 202651-20068 contacts →

Exact match

“Minerals / Geothermal / Groundwater / Petroleum / Environmental / Infrastructure Are you concerned about ensuring every opportunity for success for your project and stakeholders?”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
3Exact matchMountain View, CA, United StatesHQ recorded Oct 27, 202651-20059 contacts →

Exact match

“Applied Physics Systems is a leading manufacturer of sensors and systems based on magnetometers and accelerometers used in energy, defense, industrial, and scientific applications.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
4Exact matchSan Jose, CA, United StatesHQ recorded Oct 27, 202651-20056 contacts →

Exact match

“Empowering geoscientists everywhere to explore and quantify the world since 1969.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
5Exact matchNorwood, NJ, United StatesHQ recorded Oct 27, 202651-20055 contacts →

Exact match

“Alpine are experts in acquiring, analyzing, and interpreting data from marine offshore, nearshore, and freshwater environments.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
6Exact matchSan Carlos, CA, United StatesHQ recorded Oct 27, 202611-5034 contacts →

Exact match

“GMW Associates works with customers providing state-of-the art measuring equipment in electric current & magnetic field.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
7Exact matchAnaheim, CA, United StatesHQ recorded Oct 27, 202611-5030 contacts →

Exact match

“Manufacturer of Passive and Active Magnetic Pickups and custom coil assemblies.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
8Exact matchDenver, CO, United StatesHQ recorded Oct 27, 202611-5024 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
9Exact matchSaratoga Springs, NY, United StatesHQ recorded Oct 27, 202611-5023 contacts →

Exact match

“Geophysical Software Development Celebrating 25 Years in business in 2023 Instrumental Software Technologies, Inc.(ISTI) specializes in full turnkey seismic monitoring services…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
10Exact matchCharlottesville, VA, United StatesHQ recorded Oct 27, 202651-20022 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Oct 27, 202611-5019 contacts →

Exact match

“GeoTomo develops and offers high-end geophysical software products and provides advanced data processing services that help geophysicists around the world to image the…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
12Exact matchMukilteo, WA, United StatesHQ recorded Oct 27, 202611-5016 contacts →

Exact match

“Vista Clara develops and manufactures advanced nuclear resonance (NMR) technologies for groundwater, mining, and environmental investigations around the globe.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
13Exact matchDenver, CO, United StatesHQ recorded Oct 27, 202651-20016 contacts →

Exact match

“Mount Sopris Instruments is a leading manufacturer of slimline borehole geophysical logging systems for the groundwater, mining, engineering, environmental, geothermal, and oil…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
14Exact matchWheat Ridge, CO, United StatesHQ recorded Oct 27, 202611-5015 contacts →

Exact match

“Earth Science Systems, LLC (ESS, LLC) manufactures geophysical instrumentation and software for the construction, infrastructure, and energy industries.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
15Exact matchAustin, TX, United StatesHQ recorded Oct 27, 20261-1013 contacts →

Exact match

“Exploration Instruments provides geophysical equipment on a rental basis to engineers, geophysicists, hydrologists, archaeologists, and others involved in geotechnical…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
16Exact matchIndianapolis, IN, United StatesHQ recorded Oct 27, 202611-5012 contacts →

Exact match

“Magnetic process & measurement equipment; Custom magnetic solutions; Magnetic services and consulting Magnetic Instrumentation has long been the global leader in magnetization…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
17Exact matchReno, NV, United StatesHQ recorded Oct 27, 202611-5010 contacts →

Exact match

“MWH Geo-Surveys is a geophysical service group which has been successfully providing practical and cost-effective gravity and magnetic surveys for mining, petroleum and geothermal…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Oct 27, 202651-20010 contacts →

Exact match

“At MicroTesla Magnetic Field Effects (MFE) we are committed to designing, developing, manufacturing and calibrating the most reliable, accurate and valuable directional steering…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
19Exact matchLouisville, CO, United StatesHQ recorded Oct 27, 202611-508 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
20Exact matchLafayette, CO, United StatesHQ recorded Oct 27, 202611-508 contacts →

Exact match

“Micro-g LaCoste is a division of LRS, the leading manufacturer in absolute and dynamic gravity meters.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
21Exact matchSalt Lake City, UT, United StatesHQ recorded Oct 27, 202611-507 contacts →

Exact match

“Geophysical Modeling and Inversion Services A leading global geophysical technologies company that develops and provides advanced 3D imaging solutions relevant to oil & gas…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
22Exact matchSalt Lake City, UT, United StatesHQ recorded Oct 27, 20261-106 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
23Exact matchSuite 100, United StatesHQ recorded Oct 27, 202611-504 contacts →

Exact match

“NOMIS Seismographs has been recognized world wide as a leading manufacturer of seismic monitoring equipment for the construction, mining, quarrying and demolition fields since…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
24Exact matchAlexandria, LA, United StatesHQ recorded Oct 27, 20261-104 contacts →

Exact match

“Because the World Never Stops Turning.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
25Exact matchCotati, CA, United StatesHQ recorded Oct 27, 202611-503 contacts →

Exact match

“NORCAL is a team of Professional Geologists and Geophysicists dedicated to providing a comprehensive range of proven geophysical technologies in support of geologic, groundwater…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase

Showing 25 of 82 magnetometer geophysical instrument suppliers based in the United States

See the full list, filter by size, metro and specialty, and access 324 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Magnetometer geophysical instrument suppliers based in the United States at a glance

As of Oct 27, 2026
40.8%Verified-email coverage
9.7Average contacts per company
1-10Median size (employees)
8.5%Largest-city concentration · Houston
Oct 27, 2026Page data refreshed

Companies by employee count

1-10
48
11-50
26
51-200
8

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 82 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 “magnetometer geophysical 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 324 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 October 27, 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 “magnetometer geophysical instrument suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many magnetometer geophysical instrument suppliers are there based in the United States?

RevenueBase identified 82 company matches for magnetometer geophysical instrument suppliers associated with the United States as of October 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?

Geophysical Survey Systems, Inc. Gssi tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most magnetometer geophysical instrument suppliers?

Houston leads with 7 company records, followed by Reno (4) 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 limited free results with 500 credits to start. Upgrading provides access to the 324 professional contacts with verified work emails tracked across these 82 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 October 27, 2026.

Ready to reach these companies? Verified emails and direct dials for all 82 magnetometer geophysical instrument suppliers 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.