Features:1 Wide measuring range: The product has a wide measuring range and high resolution, which is very practical 2 Easy to read: The product uses a large LCD screen, which is very easy to read and easy to use 3 Wide application range: It can be used to accurately measure the speed of lathes in wood and metal processing 4 Small and light: light weight, hard shell ABS plastic, beautiful appearance, easy to use 5 Display: 5 digits, 18mm (0 7), LCD display, with prompt function The digital display provides accurate RPM guesses or errors It is a good measurement tool Description:The large LCD display shows a wide measurement range and high resolution Durable Widely used in motors, fans, washing machines, automobiles, airplanes and other industries Specifications:Size: 131*70*29mmMaterial: hard shell ABS plasticAccuracy: (0 05%+1)Sampling time: 0 8 secondsRange selection: automatic switchingPower supply: 6F22 9VTest range: 2 5-99999rpm (rev/min)Operating temperature range: 0-50C (32~122F)Power supply: with battery, without battery (optional)Package Included:1pc* Photoelectric tachometerNotes:1 Please allow 0-1 inch error due to manual measurement Thanks for your under