Industrial Vacuum Gauge Nominal Dial Size 3 1/2 in Accuracy +/-1.5 Percent Gauge Case Material 304 Stainless Steel Process Connection Type NPT Process Connection Gender Male Lens Material Polycarbonate Process Connection Size 1/4 in Field Fillable No Process Connection Location Bottom Case Color Metallic IP/NEMA Rating IP54 (Plug Vented) IP65 (Plug Closed) NEMA 4 (Plug Closed) Primary Pressure Range 30 to 0 Dry Dampening Feature None Vibration Resistance Liquid-Filled