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