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(Inside a lock -- first version.) |
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[[File:Door-and-lock.jpg|border|center|text bottom|"How a lock opens a door"]] | [[File:Door-and-lock.jpg|border|center|text bottom|"How a lock opens a door"]] | ||
<center>We see here how the lock moves a lever which disengages the lock so that the door can open. It should be noted this design has not changed very much since the 19th century when first designed.</center> | <center>We see here how the lock moves a lever which disengages the lock so that the door can open. It should be noted this design has not changed very much since the 19th century when it was first designed in Germany.</center> | ||
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