More info
Speed detection and analysis of rotating gears, fans, pumps, and motors
Features:
    •Checks and analyzes motion and speed by simply aiming and synchronizing its flash rate (fpm) with a rotating object
    •RPMs on 4 digit LED display
    •High accuracy over a wide, dynamic range via exclusive microcomputer LSI circuit and crystal control time-base
    •Ideal for measuring the speed of moving gears, fans, pumps, motors and other equipment
    •Tripod mount for stationary use