| 11. | Early matchlock and wheel lock mechanisms were replaced by later flintlock mechanisms and finally percussion locks.
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| 12. | Prior to the 19th century, firearms were often cumbersome muzzle-loading, smooth-bore, single shot weapons with flint-lock mechanisms.
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| 13. | The door was made of thick oak boards studded with iron, with a unique heavy lock mechanism.
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| 14. | Underwater video images indicated that the lock mechanism failed and show the door to be badly damaged.
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| 15. | X-rays, library research and the telling design of lock mechanisms on both weapons confirmed they had found l'Aimable.
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| 16. | When enough keys have been inserted into the lock mechanisms of a hub portal, that level is unlocked.
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| 17. | The church door is probably the original, medieval door, although the lock mechanism dates from the 18th century.
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| 18. | In some devices, the switch is built into a keyed lock mechanism, which prevents unauthorized use of the device.
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| 19. | Weapons like the Springfield Model 1868 were produced by simply changing out the lock mechanism of a rifled musket.
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| 20. | Contributing to the accident was the failure of company maintenance personnel to adjust the down lock mechanism prior to flight.
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