Manufacturers of Geophysical Instruments

A curated directory of leading manufacturers supplying instruments for geophysical surveys worldwide. This list covers GPR, seismographs, ERT/Resistivity systems, EM instruments, gravimeters, magnetometers, marine systems, and integrated geophysical platforms. Use this directory to source equipment for engineering, environmental, archaeological, and natural resource investigations.

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Ground-Penetrating Radar (GPR)

Mala/Guideline Geo

Sweden
GPR systems for utility locating, road surveys, archaeology, and geological investigations.

GSSI – Geophysical Survey Systems Inc.

USA
High-resolution GPR for concrete, utilities, roads, and geoscience.

RADARteam / ImpulseRadar

Sweden
Modern GPR systems with multi-channel solutions for infrastructure and ground investigations.

IDS GeoRadar (Hexagon)

Italy
GPR arrays and radar interferometry for civil engineering, railways, and structural health monitoring.

Utsi Electronics

UK
Specialized GPR systems for engineering and archaeological applications.

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Seismographs & Seismic Equipment

Geometrics

USA
Seismographs, MASW systems, marine seismic gear, and magnetometers.

Seismograph, Inc. / Seistronix

USA
Robust engineering seismographs for refraction, MASW, and microtremor studies.

Geode by Geometrics

USA
Widely used multichannel seismic acquisition system.

Electro-Seis / Terra Technology

USA
Low-frequency seismic sources for near-surface work.

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Geoelectrical / Resistivity (ERT/IP)

ABEM (Guideline Geo)

Sweden
Terrameter series for resistivity, IP, SP, and VES in groundwater and geological investigations.

IRIS Instruments

France
ERT/IP systems widely used in hydrogeology, engineering, and mining.

Zonge International

USA
Geophysical equipment for IP/Resistivity, EM, and controlled-source systems.

AGI – Advanced Geosciences Inc.

USA
SuperSting ERT systems for high-resolution 2D/3D resistivity surveys.

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Electromagnetic Instruments (EM/EMI/TDEM)

GEM Systems

Canada
Magnetometers, gradiometers, and EM systems for mineral exploration and geoscience.

Geonics Limited

Canada
Industry-standard EM instruments (EM31, EM34, EM38).

Apex Parametrics

USA
TDEM systems for mineral exploration and geophysics.

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Magnetometers & Gravimeters

Scintrex

Canada
Gravimeters, magnetometers, and geophysical sensors used globally.

Micro-g LaCoste

USA
High-precision gravimeters for geodesy, mining, and crustal studies.

Bartington Instruments

UK
Fluxgate magnetometers and magnetic susceptibility meters.

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Marine Geophysical Systems

Kongsberg Maritime

Norway
Marine acoustic and geophysical systems including sub-bottom profilers and multibeam echosounders.

EdgeTech

USA
Sub-bottom profilers, side-scan sonar, and marine survey equipment.

Innomar Technologie GmbH

Germany
Parametric sub-bottom profilers for high-resolution sediment imaging.

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Multiphysics & Integrated Survey Platforms

Sercel

France
Systems for seismic acquisition (land & marine).

Leica Geosystems (Hexagon)

Switzerland
Positioning, LiDAR, and complementary geospatial tools used in combined geophysical workflows.

Trimble

USA
GNSS and mapping tools for integration in geophysical surveys.

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Notes on Selection Criteria

Manufacturers listed here provide one or more of the following:

• Proven use in engineering, environmental, and exploration geophysics

• Global availability and technical support

• Industry-standard reliability and field robustness

• Compatibility with academic, research, and commercial survey workflows

This list will expand over time to include additional vendors, niche manufacturers, and specialized instrumentation providers.