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 V8 engines. Product Features:Model for 1.600-in. to 2.100-in. Valve SpringsFits Most V8 EnginesReads in 0.005-in. IncrementsMaximum Retainer Size of 1.500-in.Made from High-Quality Aluminum
