Features: Accurate Measurement: This digital contact tachometer and speedometer provides precise measurement of both rotational speed and speed. Portable and Lightweight: Made with ABS material and electronic part, this tachometer is designed to be portable and lightweight, making it easy to carry and use in various mechanical equipment. Suitable for Professionals, Engineers, maintenance personnel, manufacturers, and anyone who needs to measure rotational speed and speed will find this tachometer essential. Versatile Applications: Suitable for a wide rangeS of fields including automotive, mechanical equipment, and power tools, this tachometer can accurately measure rotational speed and speed in various scenarios. Monitors Equipment Performances: With its digital display and precise measurement capabilities, this tachometer allows users to easily monitor the performances of their machinery and equipment, ensuring better efficiency and safety. Specifications: Material: ABS Type: TA500A/TA500B/TA500C(optional) Measurement effective distance: 50-500mm Sampling time: 0.8seconds Automatic shutdown: 15 minutes Power supply: 2x1.5V AAA(Not included) Note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xDigital Tachometer