Features and Benefits: Simply aim the highly-visible light beam at a reflective mark placed on a rotating device, push the button and the RPM reading is immediately displayedNo contact with the shaft or wheel is necessaryRPM Range - 0 to 99,999 rpmResolution - 0.1 rpm (0 to 1,000 rpm) 1 rpm (over 1,000 rpm)Easy and accurate measurement of RPM in al....(more info)