Eentec provides s R-1 Rotational Sensor and EP-300 Broadband Seismometer to the Force Balanced Servo Accelerometers, Accelographs for strong motion studies, and High Resolution Land and Ocean Bottom (OBS) Seismographs, we supply seismic instruments that match your seismic data needs. eentec Services using our patented broadband seismometers, provides unique and innovative information for oil exploration and production surveys.