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The first known example of a tumbler lock was found in the ruins of the Palace of Khorsabad built by king Sargon II (721–705 BC.) in Iraq. [1] Basic principles of the pin tumbler lock may date as far back as 2000 BC in Egypt; the lock consisted of a wooden post affixed to the door and a horizontal bolt that slid into the post.
This large 24-bolt Diebold vault door at the Winona National Bank was built in the early 1900s. On the right is the back side of the open door. On the right is the back side of the open door. To the right of the door's center are two linked boxes for the combination mechanisms and to the left is a four-movement time lock .
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The device is a small, independently rotating knob (similar to a U.S. classic door knob) facing the driver that is securely mounted on the outside rim of a steering wheel. [1] The protruding knob is an aftermarket accessory. The free rotation is intended to help make steering with one hand easier or faster.
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Antimicrobial copper-alloy touch surfaces can prevent frequently touched surfaces from serving as reservoirs for the spread of pathogenic microbes. This is especially true in healthcare facilities, where harmful viruses, bacteria, and fungi colonize and persist on doorknobs, push plates, handrails, tray tables, tap (faucet) handles, IV poles, HVAC systems, and other equipment. [1]