BTR Valve Spring Height Micrometers

BTR valve spring height micrometers are the most accurate way to measure valve spring installed height on your Chevrolet Gen III, IV, or V engine. These micrometers feature a more desirable 0.100 in. height change per revolution—reducing the chances of reading errors associated with spring height mics that have 0.050 in. height change per revolution. A unique top with indentations for your fingers makes it much easier to tighten, as opposed to the industry standard knurling at the top. BTR valve spring height micrometers are laser-etched on a black background to make it easier to see than other currently available mics. Show Less