Vacuum Gauge Nominal Dial Size 4 1/2 in Accuracy +/-0.5 Percent Gauge Case Material 316L Stainless Steel Process Connection Type NPT Process Connection Gender Male Lens Material Acrylic Process Connection Size 1/2 in Process Connection Location Bottom Case Color Stainless Steel IP/NEMA Rating IP65 Primary Pressure Range -30 to 0 Pressure Gauge Type Process Pressure Gauge Liquid-Filled Case No Socket Material 316L Stainless Steel Sensor Material 316L Stainless Steel Series 1209