Comp Cams 4928 Valve Spring Height Micrometer; For 1.400″ to 1.800″ Springs
• Quickest, easiest, most accurate way to measure valve spring installed height
• Install just like a spring, then is expanded until it fully seats valve, locks and retainer.
• Simulated installation allows ultra precise readings
• Tool is read like a micrometer and is accurate to .001”