0-200 PSI back mount air compressor pressure gauge. This gauge features a 2" face and has 1/8" Male NPT thread on the back center of the gauge. See Technical Specs for more information. -1/8" Male NPT Pipe Threads · -Center / Back Mount · -0-200 PSI · -Gauge reads at 0, 25, 50, 75, 100, 125, 150, 175, 200 PSI · -2" Face