Mengshen Digital Tachometer, Non Contact Laser Photo Tach 2.5-99999 RPM Rotation Speed Meter Gauge Measurement with Reflective Tape (9V Battery Included)

Package Content Digital Tachometer, 9V Battery, English Manual, Reflective Tape, Carrying Pouch Sampling Time 0.8 sec Detecting Distance 5cm-50cm(2-20in) Measurement Range 0-9999.9 RMP Resolution 0.1 RMP(2.5-999.9 RMP); 1 RMP(over 1000 RMP) Accurate Digital Tachometer Provides accurate and fast RPM measurement of rotating objects without direct contact. With measuring range 0-9999.9RMP, resolution 0.1 RMP(2.5-999.9 RMP); 1 RMP(over 1000 RMP) Non-contact Measurement Press and hold the "TEST" button, point the laser at the reflective tape, making sure the laser is perpendicular to the target. Screen will display real time readings of RPM. Suitable For This digital tachometer can be widely used to measure the rotation speed of all kinds of engines, motors, lathes, mills, drill press, CNC table, lawnmowers and so on. Please Attention If you use this gadget on device that is shiny or already reflective, you can put a piece of black tape on device then add reflective tape, worked well after that. To reduce hopping around or false values, try to hold the unit still and keep it 5cm-50cm(2-20in) away from the rotating part. Sometimes the reflective tape is sticky, you can use a razor blade to remove the backing. Please take out the battery if the device will not be used for a long time, or the battery will run out. Item Size 130 x 70 x 29mm(5.16 x 2.76 x 1.14in) Item Weight 74g(2.6oz) Operation Temperature 0-50℃(32-122℉) Power Supply 6F22 9V battery(Included)