Highfield lever Highfield lever A Highfield lever is a lever device which allows tension to be rapidly set up in a wire and equally rapidly released to the required extent. It is frequently used in sailing boats where tension in some part of the rigging needs to be adjusted to a pre-set amount as the wind impinges on one side of the sails or the other. It is typically used in running backstays (runners). To make it work, the backstay is led through a block or fairlead along the deck to a two-legged, second order lever mounted with its fulcrum above deck
Colt Ring Lever rifles ring lever located in front of the trigger. This lever, when pulled, would index the cylinder to the next position and cock the internal hidden hammer. Although complicated in design and prone to failures, fifty First Model rifles were ordered by the U.S. Army for use against Seminole warriors in the Second Seminole War. The First Model Ring Lever rifle features a octagonal barrel with a browned finish. The finishes of the other metal parts are blued. The rifle features a circular trigger guard, which lies behind the ring lever. The ring-shaped lever is used by the operator to both