DIGITAL VACUUM AND PRESSURE GAUGES Four models: DVG30; 0-30 in.HgV DPG05; 0-5 PSIG DPG15; 0-15 PSIG DPG30; 0-30 PSIG. Choose from 11 user-selectable metric or imperial pressure scales Contact Us PSI InHg mmHg mbar bar kPa OzIn2 InWC FtWC cmWC KGcm2 Relative (gauge) pressure reading Large, four-digit LCD display for easy reading On/Off switch 20 minute auto-off feature extends battery life ZERO set point button for calibration ASME Grade 1A accuracy; ±1% F.S. (including hysteresis, linearity, and repeatability) ABS housing All 316L St. St. wetted components (with silicone sensor) NPT bottom threaded connection 9-volt battery included (loose) Contact Us now for help with selecting the best Digital Vacuum and Pressure Gauges to fulfill your vacuum pump requirements.