Description: Timing range: 1 minute to 99999 (min MIN), 1% accuracy. used for measuring 2-stroke or 4-stroke fuel or gasoline engines, engine working timing accumulation time LCD Display Digital Tachometer: LCD display, low voltage design, built-in battery, inductive design, safe and reliable Compact Design: Made from pp with dimensions of 6.5x4.4 cm, this device is lightweight but sturdy , making it easy to handle and store Versatile Measurement Methods: Handheld digital engine tach gauge offers multiple ways to measure Rpm. You can attach 1 end of the electronic wire to the spark plug wire sheath using a metal clip for inductive measurement, wrap the wire around the sheath several times, or simply hold the tachometer 3-5 cm away from the spark plug wire sheath for accurate readings Wide Application: This tachometer is suitable for gasoline, engines, chainsaws, motorcycles, automobiles, karts, engineering vehicles, snowmobiles, ATV, boats, grinders, generators and more Specification: Material: PP, Metal Size Chart: 6.5cmx4.4cm/2.56inchx1.73inch Package Includes: 1 Piece  Chainsaw Tachometer