Description :Professional DT-2234C+ tachometer,Measures the RPM ofany rotational part.Wide measuring range & high resolution.Durable in using,large LCD displayinggives exact RPM data.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.It is a great tool to measure In wood and metal working or many other kind rotary device, it can be used to accurately measure the speed of a lathe.The reflective stripswhich stick on the rotating equipment are mainly used for reflecting the laser signal bythe tachometer equipments launch, so that the tachometer can accuratelyreceive the signals of rotating equipment.Features :Display : Large 5 digit, 18mm LCD.Test select : Automatic.Range :2.5to99,999RPMResolution : 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 inchMemory : Last Value. Max Value. Min RPMPowered by 1 x Battery 9V (Including for you)Size : 130x70x29mmWeight : About 160gPackage Includes :1 x DT-2234C+ Professional Digital Tachometer3 x Approx 20cm of reflective stripes(Make rotation measure data more accurate)1 x9Vbattery1 x Carrying cover case1 x English user manualDetails pictures :