Specifications:
Highly accurate, digital laser photo tachometer: measure rotational speed with a visible red light beam from a powerful LCD.
Wide measuring range and high resolution.
The last value / max. value / min. value will be automatically stored in the memory and can be display by turn any time.
It's a great tool to measure the RPM of motors and machine parts, the speed of a lathe or milling machine for metal or wood working, or for HVAC applications to measure fan speed.
To take the measurement, apply a reflective mark (included in package) onto the target object, aim the laser beam at the mark, the RPM displays on the LCD screen.

Type : Radiation Detector
Material: Plastic
Quantity: 1Pc
Display: Large 5 digit, 18mm (0.7") LCD
Test Range Select: Automatic
Test Range: 2.5 to 99,999 RPM
Resolution: 0.1 RPM (from 2.5 to 999.9 RPM), 1 RPM (over 1,000 RPM)
Accuracy: +/-( 0.05% +1 digit)
Detecting Distance: 50 to 200mm/2 to 10 inch (LED), 50 to 500mm/2 to 20 inch (Laser)
Memory: Last Value. Max Value. Min Value
Sampling Time : 0.8sec.(over 60 RPM)
Operation Temp: 0C to 50C(32F to 122F)
Battery: 1 x 6F22 9V (Included)
Size: 6.9cm x 13cm x 2.7cm/2.72" x 5.12" x 1.06" (Approx.)

Notes:
Due to the light and screen setting difference, the item's color may be slightly different from the pictures.
Please allow slight dimension difference due to different manual measurement.

Package Includes:
1 x Photo Laser Tachometer
1 x User Manual
1 x Battery
1 x Carrying Bag