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Clubs, glossaries, museums, shops and much more......
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There are many different machines that have chucks for holding drills, mills, parts to be machined etc and many of those machines have different chucks for different purposes.
A simple graphic overlaid on a digital caliper to show the measurement of internal and external dimensions.
A simple graphic overlaid on a digital caliper showing the caliper being used as a depth gauge.
See also: Lathes.