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This is a list of the National Register of Historic Places entries in Columbus, Ohio, United States.The National Register is a federal register for buildings, structures, and sites of historic significance.
Groundframe, with the two rightmost levers locked by Annett's key. In British, Australian, French, and Swiss railway signalling, an Annett's key is a form of trapped-key interlocking that locks levers or other items of signalling apparatus, thereby serving as a portable form of interlocking.
This is an accepted version of this page This is the latest accepted revision, reviewed on 20 December 2024. Device to open or close door Various examples of door handles throughout history A door handle or doorknob is a handle used to open or close a door. Door handles can be found on all types of doors including exterior doors of residential and commercial buildings, internal doors, cupboard ...
The Bramah lock used a cylindrical key and keyhole, as does the current lock. The end of the key has a number of slots of different depths which, when inserted into the lock and pressed against spring tension, would depress a number of wafers to a specified depth and enable the key to turn and open the lock.
Higher security lever locks (such as the five-lever) usually have notches cut into the levers. These catch the locking bolt and prevent it from moving if picking is attempted (similar to the security pins in a pin tumbler lock). The Chubb detector lock is a variation of the lever lock which was designed to detect and prevent picking attempts.
As the first portable cassette player, the Walkman transformed the way we listened to music in a pre-Spotify era. Originally priced around $150, refurbished units or those in mint condition can ...
Evans Lustron House in Columbus, Indiana. This is a list of notable Lustron houses. A Lustron house is a home built using enameled metal. There were about 2500 prefabricated homes built in this manner.
A witness first saw the gun poking through a crack between the apartment door and the frame. There had been a knock and an eerie silence, then an attempt by two men to force the door open.
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