Compact structure GHL - 3 Downhole 3 Component Terrestrial Seismic Geophone String

3 Component Geophone GHL - 3 Downhole 3 Component Terrestrial Seismic Geophone String Fast detailed description: 1 low distortion 2 perfect damping 3 good linear response 4 high sensitivity 5 wonderful waterproof and split-hair resolution Description: GHL-1 3 Component Geophone String is one of the newest models developed by Wei Hai Grand to provide the industry with a practical solution to the field problom of 2-C and 3-C arrays using 2 and 3component geophones.The GL2 is