Application:Any cases to measure the totational speed of a rotating object and to inspect the defect on its surface without the need to adhere any mark to reflect the light,and thereby without the need to halt the object from its rotation. Measurement Range：A：50~12000FPM B：50~40000 FPM C：50~20000 FPM D：50~30000 FPM E：50~2000 FPM(fit for print and textile) Display：5 10mmLCD Accaracy：-+(0.05%n+1d) Resolution：0.1 FPM( Less 1000 FPM) 1 FPM(Over 1000 FPM) Sampling time：0.3second 2 ranges：H、L (High,Low ) Flash adjust：Coarse adjustment、fine adjustment , ×2 and ÷2 for fast check Triggering Mode：Interior/Exterior Temperature：0~40C Humidity：Less than 85%RH