List sorted by manufacturer Clicking on the producer will take you to the relevant equip. Geometrics Magnetometers (land, marine & airborne), seismographs, geophones, seismic cables, CSAMT conductivity mapper, DC resistivity, vibration monitoring, borehole geophones Geotomographie Borehole S-Wave Seismic Sources, Hydrophones, Downhole Electrodes, Shallow Deviation Probe, Shear Wave Vibrator Geophysical Instruments  DC resistivity, magnetic susceptibility meters (kappameter), gamma ray spectrometers, scintillation probes, drill core scanner, shallow soil conductivity meter, chloride analyzer/coulometric titrator GSSI Ground penetrating radar (GPR) systems Robertson Geologging Borehole / Well logging equipment