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.