Digital Tachometer Tach Gauge Small Engine Tachometer Digital Display Pulse Speedometer for Jet Engine Chain Saw Cropper Generator Lawn Mower RV ATV DirtAbout this item Easy to Use: This small engine tachometer is equipped with a clip; just use the provided clip to attach to the spark wire. The body-inductive design allows the cable to be operated by the bundle of spark plugs. Tachometer Wide Applications: This tachometer is waterproof and powerful. It has a built-in CR2450 battery with lasting power and low voltage design, making it safe and reliable. It is extensively used in various chain saws, croppers, generators, lawn mowers, RVs, ATVs, dirt bikes, motocross, boats, tractors, and small gasoline engines. Tachometer Hour Meter: This digital tachometer is a high-quality new instrument and hour meter with a large non-destructive installation LCD display. It is suitable for any 2-stroke gasoline cart engines in the 30,000+ RPM range. Reset Function at Zero Hour: This upgraded RPM gauge tachometer features a reset function, allowing you to reset the total hours and maintenance time. The hour meter reads up to 10,000 hours before returning to zero, and the RPM meter can read up to 99,999 RPM. Energy Saving: When the gasoline engine is not operational, the tachometer automatically saves energy and power, with the display turning off. When the gasoline engine is in operation, the tachometer automatically starts the test. The battery can last for 4-5 years. Product dimensions: 2 x 1 x 2 inches.Model: Chainsaw Tachometer 1