Ideal for applications where a contact tachometer would be unsafe to use or will not reach. Just apply some of the supplied reflective material to the moving part and point the laser tachometer at it. The tachometer measures how often the reflective tape passes at a given time and calculates the rpm.
Applications: It is applicable to the production departments of motor, fan, paper-product, plastics, chemical fiber, washing-machine, automobile, airplane, steam, etc.

Features:
Mine Handheld Gun Type Design
Wide Range of Measurement and High Resolution
Automatic & Manual Measurement Functions
Data Record and Recall (60 Readings Max)
Max/Min/Avg Value Record Function
Record Time Interval Setup Function
LCD with White Backlight
Data Hold Function
Auto & Manual Power Off
Low Batter Indication

Specifications:
Measuring Range: 2.5 - 99999 RPM
Resolution: 0.1 RPM at 2.5-999.9RPM / 1 RPM at 1000 - 99,999 RPM
Accuracy: ±0.02% + 1 Digit
Measuring Distance: 50 - 500mm
Sample Time: 0.5s (above 120 RPM)
Operational Temperature: 0 to 50 Deg. C (32 to 122 Deg. F)
Operation Humidity: 10 to 90%RH
Storage Temperature: -10 to 60 Deg. C (14 to 140 Deg. F)
Storage Humidity: 10 to 75% RH
Dimensions: 18*105cm
Powered: via 9V Battery (not included)
Package content:
1x Laser Photo Tachometer
1x Protective Bag
2x Reflective Tape
1x User Manual (English)