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Among its basic uses are marking common, hip, valley and hip, or valley jack rafters, laying out stair stringers, determining and marking angles, and making square cuts on boards. Common lines made using a speed square include perpendicular cut marks and Angles definition of an angle for roofs, stairways, and decks. The tool uses a 0° reference.
Spinner's weasel or clock reel is a mechanical yarn-measuring device consisting of a spoked wheel with gears attached to a pointer on a marked face (which resembles a clock) and an internal mechanism that makes a "pop" sound after the desired length of yarn is measured (usually a skein). The pointer allows the spinner to see how close they are ...
Winders: Winders are steps that are narrower on one side than the other. They are used to change the direction of the stairs without landings. A series of winders form a circular or helical stairway. When three steps are used to turn a 90° corner, the middle step is called a kite winder as a kite-shaped quadrilateral.
Toilet-tissue winders are able to change over at running speed, while paper and board winders need to stop the winding process in order to cut the sheet and glue the paper on to a new wind-up core. Top-line winders introduce the paper core through a maintenance pit downstairs, with web interruption time as low as 15 seconds.
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A drum hoist (steel wire rope visible) and motor. In underground mining a hoist or winder [1] is used to raise and lower conveyances within the mine shaft.Modern hoists are normally powered using electric motors, historically with direct current drives utilizing Ward Leonard control machines and later solid-state converters (), although modern large hoists use alternating current drives that ...
It makes for quick, repeatable measurements without the need of otherwise calibrated measuring devices or workers skilled in using them. Craftsmen use them to mark clapboard and brick courses so that, for example, a course ends neatly below a window sill or at a door's architrave. They are used in remodelling so that, for example, the new ...
It can also be used for measuring lengths and for calculating angles. [12] [13] L-square L-square is a generic term used for L-shaped squares, including framing squares, engineer's squares, and try squares. The shorter edge usually being the stock, and the longer edge the blade. Melencolia try square