Second Hand Terraplus currently has a few used Geophysical Instruments for sale. Please contact us for price information.   Handheld Magnetic Susceptibility Meters KT-10 Magnetic Susceptibility Meter KT-10 Plus Magnetic Susceptibility Meter Scintillometers/Spectrometers GR-110 Gamma-Ray Scintillometers GR-135G Handheld Gamma-Ray Spectrometers GR-320 Spectrometer Borehole Logging Equipment 2SNA-1000-S Spectral Gamma Tool with 2SMA-1000 Modem Ground Penetrating Radar Easy Locator with Shallow and Mid Antennas for Utility Locating