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. Sold individually.
Product Details:

• Height Micrometer
• Model For 1.400 Inch to 1.800 Inch Valve Springs
• Fits Most 4 And 6 Cylinder Engines
• Reads In 0.005 Inch Increments; Maximum Retainer Size Of 1.500 Inches
• Made From High-Quality Aluminum Material
• Black Anodized Finish
• Sold As Each