JEGS TDC Indicator
Unlike most Top Dead Center tools which only provide a positive stop, the JEGS TDC Indicator has 1-1/2" travel, with 1/8" graduation marks on the slide for precise measurements. A dial indicator may also be used by setting the plunger on the flat of the indicator. Designed to thread into 14mm spark plug holes. .
JEGS Performance Products TDC Indicator Accurately Displays Piston Movement