This heavy duty tachometer with hourmeter is designed for Detroit Diesel engines - Mechanical clockwise rotation with a 3 1/2 inch display diameter and 0 to 2500 RPM reading range is fast, easy and clear to read. Â Used in marine, industrial and automotive applications. Â With black background, chrome rim and white needle you will find engine RPM to be an indispensible companion. Â Each mechanical tachometer comes with a 100% money back guarantee and will ship direct to you within 24hr worldwide. Â
Detroit Diesel: Â Use this tachometer when:
1.- The reading is taken from camshaft gear and the tachometer is directly mounted on the back of the engine (Camshaft to engine RPMhas a ratio of 1 to 1
2.- The reading is taken from blower and the tachometer is remote mounted on your instrument panel ( Blower to engine RPM ratio is 2 to 1. Use tachometer angle drive with a 1 to 2 ratio to obtain the engine RPM 1 to 1 reading).
3.- The reading is taken from the accessory drive gear and the tachometer is remote mounted on you instrument panel.  Accesory drive gear to engine RPM  ratio is 2 to 1.  Use tachometer angle drive with a 1 to 2 ratio to obtain engine RPM 1 to 1 reading.
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