AUTOMETER PHANTOM MECHANICAL AIR PRESSURE GAUGE -- 2-1/16 in.; 0 to 150 psi; Includes 6 ft. nylon tubing and 1/8 to 1/4 in. NPT adapter fittings; Features a 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, and tachometer bracket.