SP Tools Professional Timing Light Pro Digital (With Boot) SP620424 function digital display readout and easy to read backlit LCD Heavy duty inductive pick up and clamps One handed operation Detachable leads for easy replacement and use Protective hand guard for added safety Rotating barrel for better aim at timing mark and LCD viewing angle Patented Skip circuitry Tests up to 10,000 RPM Easy access slim line barrel Optical correct lens Shock resistant boots Tachometer: 249 to 9,990 RPM (+ 1% accuracy) Advance