Two sprung levers are fully expanded inside a small hole so that the hole diameter can be measured with an external micrometer after extraction
The set contains 4 sizes of gauge in a fitted case
Extra long for gauging deep and shallow holes, slots and similar workpieces
Gauging surfaces are fully hardened for long life
Can be used for metric and imperial measurements
3 – 13mm capacity small Hole Gauges
3-13mm
