Geophone GL Series Terrestrial Digital Geophone strings GLI Land Geophone String Fast detailed description: 1 good performance simple operating 2 stable and reliable parameters 3 light weight 4 reasonable stucture made GL1 very suitable for all kinds complex field Description: GLI Land Geophone ... อ่านเพิ่มเติม
3 Component Geophone GHL -2 Downhole 3 Component Terrestrial Seismic Geophone String Fast detailed description: 1 high sensitivity 2 low distortion 3 perfect damping 4 good linear response 5 wonderful waterproof and split-hair resolution Description: GHL-1 3Component Geophone String is one of the ... อ่านเพิ่มเติม