Faria Chesapeake Black 4" Tachometer - 4000 RPM (Diesel) [33742] Hunting & Fishing | Filet Tables A pressure gauge operates by

A pressure gauge operates by sending a low amperage current through the gauges' meter to ground via a sending unit with variable resistance

Max PSI: 40

Black Powder Coat Finish

UPC: 671880595667

Faria Chesapeake Black 4" Tachometer - 4000 RPM (Diesel) [33742] Hunting & Fishing | Filet Tables A pressure gauge operates byChesapeake Black 4" Tachometer 4000 RPM (Diesel) (Mechanical Takeoff & Var Ratio Alt) Perimeter lighted Black dial with stylish Blue and White graphics, polished stainless steel bezel, contoured white pointer and domed glass lens. Electronic tachometers work by counting pulses generated by the ignition system, alternator, tach signal generator or magnetic pickup sender. The tach is hooked up to +12VDC, Ground and one of the signal sources listed