Product Description: 1. Function: Measure installed valve spring height conveniently and accurately.Covers most V8s. 2. Easy to Use: You install our 4929 Height Mic just like you would a valve spring, then expand the tool until it has seated the valve, locks and retainer. This simulated seat pressure allows ultra precise readings. 3. Precise Reading: 4929 Valve Spring Micrometer with ultra precise readings can measures 1.600 inch-2.200 inch installed height.The tool is then read like a micrometer and is accurate to .001". 4. High Quality: Made of high quality carbon steel with black finish, great strengh and light weight , anti-corrosion , durable to use and no deformation. .
