This is a professional and practical tachometer with wide measuring type and range. It is dual use， you can choose non-contact or contact way to test on your needs. With laser technology to targeting， you can get more accurate data. It can be widely used in the field of motor， electrical fan， paper making， plastic industry， chemical fiber， washing machines， car making etc. 

Features: 
Dual use for non-contact & contact testing on your needs. 
Have 4 different connecting head used for contact measuring. 
Wide measuring type: can test rotational speed(RPM)， counter rotating(REV)，frequency(Hz)，surface speed(m/minute; inch/min; feet/min; yard/min and length(meter， inch， feet， yard). 
High resolution ratio and 5-digit backlight LCD display. 
Latest laser targeting technology. 
All 30 data storage: 10 maximum/ minimum/instantaneous measuring data. 
Wide measuring range: non-contact way--2 to 99999RPM; contact way--2 to 20000. 
Sampling time is just 0.5 sec. 
Extensive usage: usually can be used in the field of motor， electrical fan， paper making， plastic industry， chemical fiber， washing machines， car making etc. 

Specifications: 
Power Supply: 9V Battery（Not Included) 
Display: 5-digit Backlight LCD Display 
Accuracy: 0.02% +/- 2 digits 
Contact Measuring Range: 2-20000RPM 
Non-contact Measuring Range: 2-99999RPM 
REV Measuring Range: 1-99999 
Resolution Ratio: 0.1 or 1 
Sampling Time: 0.5sec. 
Measuring Distance: 50mm-600mm 
Power Consumption: 45mA 
Working Temperature: 0℃-50℃(32℉-122℉) 
Item Size: 18 * 7 * 2.8cm / 7.09 * 2.76 * 1.1in 
Item Weight: 196g / 6.92oz 
Package Size: 21.5 * 13 * 5.3cm / 8.47 * 5.12 * 2.09in 
Package Weight: 290.5g / 10.23oz 

Package List: 
1 * Tachometer 
4 * Connecting Head  
1 * Red Protection Cover