at cheap Lower psi/kPa, 0-15 Dry, Case, Steel Plated Chrome Gauge, Pressure 2-1/2 Instruments CARBO Mount NPT 1/4 ASME B40.1 Grade B Accuracy Compliance ± 3-2-3 % of span Oil, Water, Air, Compressor, Hydraulics, HVAC, Gaseous & Liquid media that are not highly viscous or crystallizing and not corrosive or oxidizing to copper alloy parts