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By certification 
Measuring Range:
Laser:2.5 ~ 99,999 r / min
Contact:0.5 ~ 19,999 r / min
Surface Speed:0.05 ~ 1999.9 m / min 0.2 ~ 6560 ft / min **** For more details,please do not hesitate to contact us.Thank you!
Laser:2.5 ~ 99,999 r / min
Contact:0.5 ~ 19,999 r / min
Surface Speed:0.05 ~ 1999.9 m / min 0.2 ~ 6560 ft / min **** For more details,please do not hesitate to contact us.Thank you!
