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What do you call the rolling part of a combo lock? The rolling part that allows you to enter combinations to unlock the lock? What is it called?

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  • I would say that those parts are turning, not rolling. It's a subtle difference, but "rolling" implies moving from one place to another.
    – stangdon
    Commented Jul 2, 2021 at 14:18

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Wikipedia seems to call them dials and/or discs:

Wikipedia combination lock

A combination lock is a type of locking device in which a sequence of symbols, usually numbers, is used to open the lock. The sequence may be entered using a single rotating dial which interacts with several discs or cams, by using a set of several rotating discs with inscribed symbols which directly interact with the locking mechanism, or through an electronic or mechanical keypad.

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