1/8" NPT Air Compressor / Hydraulic Pressure Gauge 0-60 PSI Back Mount 2" Face 1/8" NPT Air Compressor / Hydraulic Pressure Gauge 0-60 PSI Back Mount 2" Face This gauge has 1/8" NPT male threads which come out the back of the gauge This gauge is a top quality gauge made with a black steel case and a chrome front bezel This gauge has number markings at 0,10,20,30,40,50,60 psi.