PIC Gauge Pressure Gauge, 2 1/2" Dial, 1/4" Male NPT Connection, Bottom Mount, Single Scale, Glycerin Filled, Stainless Steel Case/Bezel, Brass Internals & Plastic Lens. Measures air pressure, water pressure, fuel pressure, gas pressure, oil pressure, anything not corrosive to brass. Accuracy is 3-2-3% of span and works from 30 to 160 degrees F. Liquid filled for added durability in applications where vibration is present. Stainless steel case and bezel, copper alloy internals. ¼” Male NPT Bottom Connection. Single Scale, 2.5” UV resistant Dial with large numbers. Ideal for pumps and compressors. Our PIC brand offers the largest selection of pressure and temperature instruments in the industry.