Faria Kronos 4" Tachometer - 4,000 RPM (Diesel - Mechanical Takeoff & VAR Ratio Alt) (54720)

Kronos 4" Tachometer - 4000 RPM (Diesel - Mechanical Takeoff & Var Ratio Alt)4" - Hole size: 3.375" (85mm)Electronic tachometers work by counting pulses generated by the ingition system alternator tach signal generator or magnetic pickup sender. The tach is hooked up to +12VDC Ground and one of the signal sources listed above.By selecting the right tach and setting the switch on the back to the correct postion you let the tachometer know how many pulses are sent per each engine revolution.Benefirts:Wide range of scalesMultiple signal sourcesRugged Reliable construction Product : FARIA KRONOS 4" TACHOMETER 4000 RPM DIESEL MECH TAKEOFF Manufacturer : FARIA BEEDE INSTRUMENTS Manufacturer Part No : 39007 UPC : 759266390072