Air Gauge for Air Tank Accessory W10055, CARBO Instruments size 1- 1/2" Pressure Gauge, Chrome Plated Steel Case, Dry, 0-200 psi/kPa, Lower Mount 1/8" NPT, Water, Air, Compressor, Hydraulics, HVAC, Gaseous & Liquid media that are not highly viscous or crystallizing and not corrosive or oxidizing to copper alloy parts