Tachometer (Treysit Sirometer)
This part is used to determine the RPMs of your engine. It measures from 800 to 25,000 revolutions per minute and can work on any small engine.
Genuine OEM Part - Manufacturer #19200
Tachometer/Hour Meter
This part measures the RPM of your engine. The meter will display the RPMs while the engine is running, when the engne is stopped, it will display the elasped time. The maximum speed this part measures is 20,000 RPMS and it updates every 1-2 seconds.
Genuine OEM Part - Manufacturer #19598