Milton 1174-7 1 4 Npt Center Back Mount Gauge 0-100 Psi Liquid Filled Center Back Mount Pressure Gauge With 4" Dial, 0-5000 PSI Milton 1174-7 Air Compressor Gauge Can also be used in steam applications if less than 120 degrees Fahrenheit. Milton 1/4 In. NPT Back Mount Mini Pressure Gauge – Hemlock Hardware The 1/4 NPT pressure gauge has a center back mount and offers a pressure range of 0 to 100 PSI., 1 1/2 face diameter., Fit type: Universal ClearFLEX 60NP ; O.D., 0.312 IN ; Cover Color, Clear ; Working Pressure @ 70°, 35 PSI ; Max Length, 100 FT ; Assembly Length (FT), 100 FT... Use this pressure gauge for reliable service with compressors, regulators, air lines, pneumatic tools and equipment. Bourdon - Pressure Gauge: 2-1/2 Dial Dia, 0 to 100 psi, 1/4 NPT Compatible with vehicle type: All of the above