Commonly used in motor,electric fan,paper making,plastic, chemical fiber,washing machines and cars field. 

Specification

SpecificationMeasuremement：Non-contact （1~19999 ，999999counts： ）
Display：Contact
Target distance：Non-contact（50mm~600mm）
Best Accuracy ：0.02%±2dgt
Auto power off：15s
Max/min / road / M / min M / s feet / mimute feet / sec / min
Size：236×72×35mm
Weight：218g