SHOPMASTER TOOLING

ST 62

The ST 62 is a 5 piece set of telescoping gauges.  When measuring the inside diameter of holes such as cylinders where you need to test for bore squareness and taper, these tools are invaluable.  Each gauge has a spring loaded plunger that opens to the inside wall of the cylinder and is then locked by a twist of the end knob.  Measure the gauge with a caliper of micrometer to find the bore size.  Measures bores from 1/2" to 6" diameter