Dead Weight Pressure Testers is numerically controlled equipments that machining with the high precision, Use the special tool assembly, Calibrate with the special calibration equipment. YS-6, YS-60, YS-600 dead-weight pressure testers is high accuracy instrument,and were warded the state silver medal. this series pressure testers are used in laboratory and measuring department for calibrating the precision and standard pressure gauges. Technology from Germany, manufactured in china machined digital CNC, assembled and Calibrated by special equipment