The ADT927 Hydraulic Pressure Test Pump is a hand operated pressure pump designed to generate pressure from -85 kPa to 70,000 kPa. A high quality vernier control allows the high pressure to be easily generated and controlled smoothly. Two hand tight connectors installed on the pump allow for easy connecting and disconnecting to the test pump without the need for wrenches or thread tape. The ADT927 is an ideal comparison test pump for calibrating pressure instruments in the field or workshop.