Features: Large LCD display, wide measurement range, high resolution. durable. The digital display provides accurate RPM without error. It is an excellent tool for measuring wood and metal working and can be used to accurately measure the speed of a lathe. RPM of motors and machine parts. The case is designed to fit comfortably in both hands. Last value/minute. Values are automatically stored in memory and can be rotated at any time. It has a wide measuring range, high resolution, large screen display, clear readings, light weight, and the outer shell is made of hard ABS plastic, beautiful in appearance and easy to use. Specifications: Output: less than 1mw Material: Hard shell ABS plastic Mirror length: Length 50 x Width 25mm Battery length: Length 44 x Width 25 x Depth 16mm Product type: Non-contact RPM laser photoelectric tachometer Net size: Length 130 x Width 65mm Scanning Diameter: 17mm Package Dimensions: Length 146 x Width 95 x Depth 45mm Purpose: Measuring the speed of lathe motors and machines Range: 2.5 to 99,999 RPM Package Contents: 1 x Digital Laser Photoelectric Tachometer Non-Contact Tachometer (Battery not included< br>