IGNITION TIMING CLOCK SETGauge for determining the exact top dead centre for 2 and 4stroke engines Screwed into the spark plug hole. The top dead centre can is determined using the dial gauge. By rotating the crankshaft, the position of the piston can now be determined in mm before or after TDC An invaluable tool for setting the ignition timing for older, break contact controlled motors Consisting of : Dial gauge (0 2,4 bar) Extensions for dial gauge (75mm and 35mm) Recording