Digital Industrial Vacuum Gauge, Accuracy +/-0.50 Percent, Gauge Case Material ABS Polycarbonate, Nominal Dial Size 2 1/2 in, Lens Material Polycarbonate, IP/NEMA Rating IP67, Hazardous Location Rating Not Rated, Compatible Process Media Wide Variety of Pressure Media, Sensor Material 17-4 Stainless Steel, Socket Material 316L Stainless Steel, Sensor Type CVD Strain Gauge, Process Connection Type NPT, Display Units 5 Digit, Process Connection Gender Male, Battery Type (2) AA Batteries