A History Of The Pin Tumbler Lock The pin tumbler lock is a lock mechanism that uses pins that varying in length to keep the lock from being opened without the matching key. Pin tumblers are used in cylinder locks, butthey can also be used in tubular or radial locks. The basics of the pin tumbler lock goes back to 2000 BC in Egypt. the lock consisted of a wooden post affixed to the door, and a horizontal bolt that slid into the post. The bolt had north to south openings into which fitted a set of... Read full post here
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