Digital hydraulic self calibrator (HC-15S) for VW piezometer is releas…

The digital hydraulic calibrator set is a self-calibrator (model HC-15S) for testing or calibrating

a vibrating wire piezometer. It combines a hand pump set with a piezometer clamp that is made

differently by model. Calibration by using digital pressure gauge and water preesure makes

easy and accurate calibration possible.