Frank W. Murphy Tachometers and Tach/Hourmeters - AT and ATH Series

• A rugged instrument with solid-state circuitry for indication of engine RPM. • It is equipped with a ring nut for mounting into a standard 3-3/8” dash mounting hole. • A full 240° sweep of the pointer gives an accurate indication on a large, easy-to-read scale and the dial can be illuminated for night reading. • The ATH Series model is also equipped with an hourmeter to record the elapsed running time of an engine. • Easy one-button calibration procedure. • Every model will accept all signal sources: Alternator, magnetic pickup or ignition. • LED red backlight. • Power input: 10-32 VDC. • Backlight: LED, red. • Scale: 0 - 3,000 RPM. • Case material: Nylon, 12% glass filled.