AUTOMETER PRO-COMP LIQUID-FILLED MECHANICAL BLOWER PRESSURE GAUGE -- 2-5/8 in.; 0 to 60 psi; With memory and dash mounted release valve; Includes 1/8 in. NPT adapter fittings; Features red pointer for quick glance monitoring and as a safeguard against dangerous conditions; Designed for precision movement and extreme accuracy; Recommends gauge mounting cup, gauge panel, mounting angle ring, and tachometer bracket; Requires number 4 braided hose kit and steel hose.