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A lever corkscrew. The lever or "rabbit" corkscrew is operated using a pair of handles which are used to grip the neck of the bottle, and a lever which is simply pressed down to twist the screw into the cork, then lifted to extract the cork. Expelling the cork from the device is done with a similar press/lift action. [11]
A level-luffing crane is a crane mechanism where the hook remains at the same level while luffing: moving the jib up and down, so as to move the hook inwards and outwards relative to the base. [ 1 ] Usually the description is only applied to those with a luffing jib that have some additional mechanism applied to keep the hook level when luffing.
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Double-paddle keys have one arm for each of the two contacts, each arm held away from the common center by a spring; pressing either of the paddles towards the center makes contact, the same as pressing a single-lever key to one side. For double-paddle keys wired to an "iambic" keyer, squeezing both paddles together makes a double-contact ...
Graph_level_structure.pdf (685 × 283 pixels, file size: 65 KB, MIME type: application/pdf) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.