manually operated screw
51ship — shipless, adj. shiplessly, adv. /ship/, n., v., shipped, shipping. n. 1. a vessel, esp. a large oceangoing one propelled by sails or engines. 2. Naut. a. a sailing vessel square rigged on all of three or more masts, having jibs, staysails, and a… …
52Steering — For other uses, see Steering (disambiguation). Part of car steering mechanism: tie rod, steering arm, king pin axis (using ball joints). Steering is the term applied to the collection of components, linkages, etc. which will allow a vessel (ship …
53Latch (hardware) — Window latch Door latch A latch (called sneck in Nor …
54Appropriate technology — (AT) is technology that is designed with special consideration to the environmental, ethical, cultural, social and economical aspects of the community it is intended for. With these goals in mind, AT typically requires fewer resources, is easier… …
55Toronto Grey and Bruce Railway — Infobox rail railroad name =Toronto Grey and Bruce Railway railroad abbr =TG BR logo filename = locale =Ontario, Canada start year =1868 end year =1883, merged into Ontario and Quebec Railway; finally into CPR, mostly abandoned in 1980s; but… …
56Screwdriver — Infobox tool name = Screwdriver caption =A flathead screwdriver| other name =Turnscrew classification = Hand tool types = See shape chart below used with = related = Hex key WrenchThe screwdriver is a device specifically designed to insert and… …
57Single-shot — This article is about firearms. For other uses, see Single Shot (disambiguation). Single shot firearms are firearms that hold only a single round of ammunition, and must be reloaded after each shot. The history of firearms began with single shot… …
58photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
59Machine tool — A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by machining, which is the selective removal of metal. The term machine tool is usually reserved for tools that used a power source other than …
60Drill — For other uses, see Drill (disambiguation). Drill scheme A drill or drill motor is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for drilling holes in various materials or… …
