The M-4751 is a 0-60 PSI liquid filled pressure gauge, 2 1/2" glass face diameter. This gauge is a center back mount with 1/4" NPT threaded connection. A U-clamp bracket is included for mounting to a panel. Can be used with our M-151-A gauge bracket panel. (Image shown is a 0-200 PSI Liquid Filled Pressure Gauge.)