Proform#778-66903Valve Spring Height Micrometer
Proform 66903 - Proform Valve Spring Height Mic Details
Valve Spring Height Micrometers
Measure installed valve spring height conveniently and accurately.
Simply install the height micrometer instead of a valve spring, and then rotate the clearly engraved dial to expand the tool to seat the valve, locks and retainer.
Fits most 4 and 6 cylinder engines
Measuring spring height is vital to any properly tuned engine. That is why Proform offers their own quality valve spring height mic that measures the installed valve spring height on most V8 engines. Simple to use, just install the height micrometer instead of a valve spring. Rotate the clear to read engraved dial to expand the tool to seat the valve, locks and retainer.