Keep track of your engine’s performance with the latest compact tachometer and hour meter. Measures RPM from 0 to 15,000 in 10 RPM units. Shows total engine hours up to 99,999, with resettable A/B trip meters that measure up to 999.9 hours. Easy-to-read backlit LCD screen. Measures 69.8 mm W x 34.4 mm L x 17.2 mm H.