[Perfect Package]: You will get a high quality non-contact tachometer with 3 reflective strips, 1 English manual and a blue cloth bag, which makes it more convenient to use and carry.[Wide Measuring Range]: This is a non-contact tachometer, in which the laser tachometer has a test range of 2.5 rpm to 99,999 rpm (revolutions per minute ) to ensure that it can measure a larger range.[High Accuracy]: The LCD digital tachometer can accurately measure the speed value, and the sampling frequency is high. The digital tachometer can be clearly displayed on the LCD screen so that high precision measurement can be achieved. High resolution can reach (0.1rpm or 1rpm)[Auto Memory]: The tachometer can automatically memorize the maximum value, minimum value and last measured value through the range automatic, so that you can save the data better. In addition, the non-contact tachometer is small, light and easy to carry.[Wide Application]: The digital tachometer can be widely used in many fields, it can be used in engines for metal and wood cutting work, and can also be used in wheels, lathes, electric fans, papermaking, plastics industry, automobile manufacturing and other fields. Specification: Color: orange + gray < /p> Bag color: blue Tachometer size: 131 70 29mm < b>Test range: 2.5 rpm ~ 99,999 rpm (revolutions per minute) Resolution: 0.1 rpm (revolutions per minute) (2.5999.9 rpm ) 1 rpm (revolutions per minute) Sample time: 0.8 seconds (over above 60 rpm) Measuring distance ef effective: 50mm ~ 500mm (laser light source) Range selection: automatic switching Light source power supply: single 6F22 9V battery Power consumption: about 35mA Scope of delivery: 1 * digital tachometer 1 * blue cloth bag 1 * English manual 3 * reflective tape < /p> Suggest: 1. Before using the digital tachometer to measure, stick the reflective tape on the target object first. 2. Do not point the laser beam directly at the eyes. 3. Do not use non-contact tachometer near explosive gases or other potentially explosive areas. Service: We have always been committed to providing our customers with the best service. If you have any questions about our LCD digital tachometer, you can contact us by email, and we will solve the problem and provide you with help within as soon as possible.