TDC IndicatorAccurately Displays Piston Movement14mm ThreadsMade of 1144 SteelStainless Steel Spring1-1/2" Travel1/8 in. Graduation MarksMade in the USA JEGS 555-80527 Top Dead Center Indicator Easily Set a Piston to TDC Accurately displays piston movement Utilizes 14 mm threads for most applications Features 1 1/2 in. of travel with 1/8 in. 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 Made in the USA with high-quality materials and assemblyNote: DO NOT use on an engine that has an acute spark plug angle relative to the flat top of the piston, or.
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