Ashcroft 1001 Series Panel Mount Pressure Gauge, 0 to 160 psi, 2 in Dial, Steel Case Black, 1 4 in Center Back NPT, with Nuts & U Clamp G3595803 Inside Width 7 1 8 in Inside Width 7 1 8 in Inherently Flame Resistant Process Connection Location Center Back Series 1001 Nominal Dial Size 2 in Primary Scale Pressure Range 0 to 160 psi Primary Scale Units psi Accuracy ±3 2 3% Process Connection Location Center Back Process Connection Type NPT Process Connection Size 1 4 in Process Connection Gender Male Gauge Case Material Steel Case Color Black Socket Material Brass Sensor Material Bronze Lens Material Polycarbonate Includes Nuts