Non-contact infrared laser tachometer portable high-precision speed test tool for industrial fans Features: *High-Quality Material: This product is made of high-quality material, wear-resistant and durable, not easy to break, can be used for a long time use. *Easy to use: This digital tachometer is very easy to use, just apply the reflective mark on the target object and then aim the mark with the beam. * High Accuracy: This infrared digital tachometer is a high-quality instrument with the characteristics of high-precision measurement, fast measurement time and long detection distance. * Digital display: LCD liquid crystal display, the value will be automatically stored in the memory, allowing you to see the value clearly. *Wide Applications: This tachometer has a wide range of applications, including measuring the rotational speed of machines, motors, model cars, wheels, lathes used for metal or wood cutting work, etc. Note: * Due to different light effects, the actual color may be slightly different from the image * Please allow 1-3 cm deviation due to manual measurement Material: ABS< br>Product size: 150*80*40mm Battery: 9V battery (not included) Accuracy: 0.02%+1 digital Measuring distance: 50-500mm Packaging list:1 x Infrared digital tachometer 1. About