Specifications:

• Origin: CN(Origin)
• Resolution: 0.1 rpm
• Power supply: 2*1.5V AAA battery (not included)
• Model Number: GM8905
• mesurement distance: 50-500mm
• Measure range: 2.5~99999 rpm
• LCD dispaly: YES
• LCD backlight: Yes
• Item: Digital Tachometer
• Function 2: Light path
• Function 1: Reflection point
• Brand Name: OUTEST
• Accuracy: +-(0.1%n+5d)rpm