- 3Dgeophysics.com
 - Rents and sells a variety of geophysical instruments including GPR, EM, seismic, resistivity, and more. Also offers on-site training. - Abem Instrument AB
- Advanced Geosciences, Inc.
- Manufactures resistivity instruments, such as the Sting R1 and Swift multi-electrode systems.
- Applied Technoques Co.
- Radon counting systems. instrumentation used by scientists for earthquake detection, hydro-dam groundwater leakage and pollution studies of oceans and estuaries.
- ASC Scientific
- Research tools for the earth sciences navigation and mapping systems Geology field equipment Paleomagnetics instruments, GPS Mapping Systems.
 Encardio-Rite
- Manufacturers and exporters of geotechnical instruments.- Geokon, Inc.
- Designs and manufactures geotechnical instruments.
- Geometrics Inc.
- Sales and rental of geophysical instruments: seimographs, magnetometers, and EM to image underground.
- Geonics Limited
- Manufacturers of frequency and time domain electromagnetic instruments. All instruments available for purchase, lease or rental.
- Geophysical Survey Systems, Inc.
- Manufacturer of ground penetrating radar systems.
- Geosystems
- Instrumentation company specialising in the design, manufacture and support of geotechnical instruments.
- Geotech Instruments, LLC
- Manufacturer of high-resolution low-noise seismometers, digitizers, data recorders and seismic network components.
- GeoToolsDirect
- Sells geology tools and accessories.
- GiscoGeo
- Worldwide geophysical instrument source with total support in selection and use.
- Hydroscience Technologies, Inc.
- Manufacturer of seismic data acquisition systems and towed arrays (ASW & commercial).
- Input/Output, Inc.
- Manufacturering seismic instrumentation for land, marine, and reservoir geophysical exploration.
- Instantel
- Manufactures vibration monitoring equipment for the mining, construction, and geotechnical markets.
- Kinemetrics, Inc.
- Manufacturing of seismic technology and earthquake monitoring instrumentation.
- Kooter's Geology Tools
- Basic tools and gear for the student geologist and rock hound.
- Kyoto Electronics Mfg.
- Offering automatic and moisture titratiors, meters, and monitors.
- Mount Sopris Instruments
- Designs and manufactures borehole geophysical logging systems for the geological, natural resource, and environmental communities.
- Nanometrics Seismological Instruments Inc.
- Manufacturer of seismological instruments and software and a supplier of complete turnkey seismograph networks worldwide.
- Roctest Ltd.
- Manufactures geotechnical and structural instruments that measures pressure, bearing capacity, permeability, displacement, deformation and inclination.
- Seistronix
- Manufactures, leases, and sells exploration seismographs and related geophysical equipment for oil, gas, mineral, and geotechnical exploration.
- Set Point Europe
- Offers gas analysis, detection, and measurement products as well as geotechnical instrumentation.
- Soil Instruments Ltd.
- Designs, manufactures, and supplies instrumentation for the geotechnical, structural, and civil engineering industries.
- Sprengnether Instruments
- Supplier of seismic and strong motion sensors, data acquisition systems and related telemetry, timing and data analysis systems.
- West Systems
- Develops and manufactures instruments for monitoring soil gases and volcanos.
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