Features: It can measure the RPM of motors and machine parts. Wide measuring range & high resolution. The last value/min . value will be automatically stored in memory and can be displayed by turn anytime. The housing has been carefully shaped to fit comfortably in either hand. In wood and metal working it can be used to accurately measure the speed of a lathe. It can measure car tyre RPM, motor RPM. Display: Large 5 digit, 18mm LCD. Test select: Automatic. Range: 2.5 to 99,999... Features: It can measure the RPM of motors and machine parts. Wide measuring range & high resolution. The last value/min . value will be automatically stored in memory and can be displayed by turn anytime. The housing has been carefully shaped to fit comfortably in either hand. In wood and metal working it can be used to accurately measure the speed of a lathe. It can measure car tyre RPM, motor RPM. Display: Large 5 digit, 18mm LCD. Test select: Automatic. 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) Distance: 50 to 500mm/ 2 to 20 inch Memory: Last Value, Max Value, Min RPM Power: 1 x 6F22 Battery 9V (Not included) Package Includes: 1 x Digital Laser Photo Tachometer Show More