02/11/2008
How it's Made: Combination Locks
If you've always wondered how combination locks were manufactured, then check out this interesting "How it's Made" segment. Video after the break.
A combination lock is a type of lock in which a sequence of numbers or symbols 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 numerals which directly interact with the locking mechanism, or through an electronic or mechanical keypad
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