belt screw
21Battleship — For other uses, see Battleship (disambiguation). The firepower of a battleship demonstrated by USS Iowa (ca. 1984) A battleship is a large armored warship with a main battery consisting of heavy caliber guns. Battleships were large …
22Garage door opener — A garage door opener is a motorized device that opens and closes garage doors. Most are controlled by switches on the garage wall, as well as by remote controls carried in the garage owner s cars. The opener A common misconception regarding… …
23Caliper — For other uses, see Caliper (disambiguation). A vernier caliper …
24naval ship — Introduction the chief instrument by which a nation extends its military power onto the seas. Warships protect the movement over water of military forces to coastal areas where they may be landed and used against enemy forces; warships… …
25Supercharger — A supercharger is an air compressor used for forced induction of an internal combustion engine. The greater mass flow rate provides more oxygen to support combustion than would be available in a naturally aspirated engine, which allows more fuel… …
26conveyor — /keuhn vay euhr/, n. 1. a person or thing that conveys. 2. See conveyor belt. Also, conveyer. [1505 15; CONVEY + OR2] * * * ▪ mechanical device any of various devices that provide mechanized movement of material, as in a factory; they are… …
27List of United States Marine Corps acronyms and expressions — This is a list of acronyms, expressions, euphemisms, jargon, military slang, and sayings in common or formerly common use in the United States Marine Corps. Many of the words or phrases have varying levels of acceptance among different units or… …
28Drill — 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… …
29History of perpetual motion machines — The history of perpetual motion machines dates back to the Middle Ages. For millennia, it was not clear whether perpetual motion devices were possible or not, but the development of modern thermodynamics has indicated that they are impossible.… …
30hand tool — any tool or implement designed for manual operation. * * * Introduction any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… …
