The 2 1/2″ DRY FACE 0-100 PSI PRESSURE GAUGE is a replacement for your sprayer. The Pressure Gauge provides an accurate pressure measurement when utilizing a handgun or boom. Built with a 1/4 inch bottom brass mount stem, ABS plastic case, coated aluminum dial face, black enameled steel pointer and 2 1/2 inch face to replace pressure gauge on some sprayers.