G3999 Altitude Pressure Gauge Accuracy +/-1.0 Percent Gauge Case Material Stainless Steel Nominal Dial Size 4 1/2 in Lens Material Acrylic IP/NEMA Rating Not Rated Hazardous Location Rating Not Rated Sensor Material Copper Socket Material Copper Process Connection Type NPT Process Connection Gender Male Process Connection Location Bottom Process Connection Size 1/4 in Panel-Mountable No Pressure Gauge Type Altitude Gauge Process Temperature Range -40 Degrees to 140 Degrees F