COMP Cams Telescoping Gauge Set

The Comp Cams Telescoping Gauge Set allows you to quickly measure the inside diameter of everything from basic bore diameter, to grooves, to hard-to-reach recesses. Simply insert the gauge into the area, turn the knob and the spring-fed arms will snap to the outer edges. Now, tighten the knob to lock the inside measurement then use a Micrometer to obtain the desired measurement.

Features:

Especially useful for measuring valve spring installed height

Used to measure slots, grooves, recesses, cylinders

Each set contains (6) gauges, covering a total range of 5/16" to 6", all enclosed in storage pouch