Low frequency geophone 1Hz  (P/N: ST-1N) in  vertical direction (P wave) and horizontal direction (S wave) are available. They are suitable for deep seismic exploration, engineering pulse measurement and other vibration analysis. Long travel version of the ST-1N geophone, with Max. coil excursion p-p 6.0mm. Special orientations upon request beyond the normal vertical and horizontal … Continue reading Low Frequency Geophone 1Hz