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. Made in the USA.
JEGS Performance Products TDC Indicator Accurately Displays Piston Movement