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The Kid Should See This

How Do Locks Work?

How Locks Work by Carlo Clerici. This features pin tumbler lock, invented by Linus Yale, Sr. in 1848.

Here’s another example in gif format:

how a key works inside a lock

For more locks, travel back to the 1700sThe Roentgens’ Berlin Secretary Cabinet.

Plus: Making a combination lock from a steel bolt.

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