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Electrical installations. Knob-and-tube wiring (sometimes abbreviated K&T) is an early standardized method of electrical wiring in buildings, in common use in North America from about 1880 to the 1930s. [1] [2] It consisted of single-insulated copper conductors run within wall or ceiling cavities, passing through joist and stud drill-holes via ...
The SNL was an inventory system used from 1930 to 1958 to catalog all the items the Army's Ordnance Corps issued. The AIC was used by the United States Army Ordnance Corps from January, 1942 to 1958. It listed munitions and explosives (items from SNLs P, R, S, and T), items that were considered priority issue for soldiers in combat.
Schematic cross section of a pressurized caisson. In geotechnical engineering, a caisson (/ ˈ k eɪ s ən,-s ɒ n /; borrowed from French caisson 'box', from Italian cassone 'large box', an augmentative of cassa) is a watertight retaining structure used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, or for the repair of ships.
Open-ended zippers use a box and pin mechanism to lock the two sides of the zipper into place, often in jackets. Open-ended zippers can be of any of the above described types. Two way open-ended zippers have a puller on each end of the zipper tape instead of having an insertion pin and pin box at the bottom. Someone wearing a garment with this ...
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There are rectangular metal rings located between the web loops and the buckles on the front of the straps. The 1-inch (2.5 cm) wide adjusting straps have snap hooks at one end. The back adjusting strap has an inverted V of which each end has a snap hook. Each of the adjusting straps has a loop around it made of 1-inch (2.5 cm) elastic material.
Functions of the junction box. A small metal or plastic junction box may form part of an electrical conduit or thermoplastic-sheathed cable (TPS) wiring system in a building. If designed for surface mounting, it is used mostly in ceilings, under floors or concealed behind an access panel—particularly in domestic or commercial buildings.
June 1989 [ 1] The Casio F-91W is a digital watch manufactured by Japanese electronics company Casio. Introduced in June 1989 [ 1] as a successor of the F-87W, [ 2] it is popular for its low price and long battery life. [ 3] As of 2011, annual production of the watch is 3 million units, which makes it the most sold watch in the world.