Image 5 of 6 Snap-on Set Image 6 of 6 Description copied from http://www.sulit.com.ph/index.php/view+classifieds/id/4186764/Snap+on+Timing+Light A timing light is a stroboscope used to dynamically set the ignition timing of an Otto cycle or similar internal combustion engine equipped with a distributor . Modern electronically controlled passenger vehicle engines require use of a scan