- Two sprung leaves are fully expanded inside a small hole so that the hole diameter can be measured with an outside micrometer after extraction.
- Extra long for gauging deep and shallow holes, slots and similar workpieces.
- Each set includes includes all 4 sizes of gauge in a fitted case.
- Gauging surfaces are fully hardened to ensure long tool life.
- Range : Ø3-13mm
- Remarks : Set consists of 4 Small Hole Gauges: Ø3-5mm, Ø5-7.5mm, Ø7.5-10mm, Ø10-13mm