Features:
Record the MAX automatically. Value, min. value and last value with low battery display.
Can be measured from 50 to 500 mm with large LCD display.
0.8 seconds sampling time and 5-digit 18-mm LCD display with non-contact speed measurement.
Wide use: can usually be in the field of motor, wheels, lathe for metal or wood cutting work, electric fans, paper making, plastics industry, chemical fiber, washing machines, automakers, etc. use.

Specifications:
Colour: Dark grey
Material: ABS plastic
Display: 5-digit 18mm (0.7 ") LCD display
Measuring range: 2.5 RPM
Resolution: 0.1 RPM at 2.5-999.9RPM, 1 RPM at 1000-99.999 RPM!
Accuracy: ± (0.05%+ 1 Digit)
Measuring distance: 50-500mm/ 2-20in
Time base: 6MHz quartz oscillator
Select test area: automatic switching
Sampling time: 0.8s (over 60 RPM)
Function: Display last value, MAX value, Min value
Power supply: 1.9V 6F22 battery (not included)
Power consumption: approx. 30mA
Operating temperature: 0 ℃ -50 ℃ (32 ℉ -122 ℉)
130 * 70 * 29mm / 5.12 * 2.76 * 1.14in
Product weight: 79g / 2.80oz
Package size: 15 * 9.3 * 5cm / 5.91 * 3.66 * 1.97in

Package Included:
1 x Digital speedometer