Internal spring button

Internal spring button

Internal spring probes are testing or measuring devices made of steel that are used in metal and woodworking ( turners ). They serve as measuring tools for the inside diameters of pipes and bores. Due to the small grooves, dimensional changes can also be checked in deeper regions of the bore.

See also

• Dance master (measuring tool)
• External spring button
• Feather compass

Individual evidence

1. ^ Herman W. Pollack: Manufacturing and machine tool operations. Prentice-Hall, 1968 ( limited preview in Google Book search).