air-hardened steel
71Lathe — A lathe (pronEng|ˈleɪð) is a machine tool which spins a block of material to perform various operations such as cutting, sanding, knurling, drilling, or deformation with tools that are applied to the workpiece to create an object which has… …
727.92x57mm Mauser — Infobox Firearm Cartridge name=7.92x57mm caption= From left to right 9.3x62mm, .30 06 Springfield, 7.92x57mm IS, 6.5x55mm and 7.62x51 mm cartridges origin=flagcountry|German Empire type=Rifle service=1888 present used by=Germany and others… …
73Montana class battleship — A 1944 model of a Montana class battleship Class overview Name: Montana class battleship …
74materials testing — Introduction measurement of the characteristics and behaviour of such substances as metals, ceramics, or plastics under various conditions. The data thus obtained can be used in specifying the suitability of materials for various… …
75MBT-70 — A model of the United States MBT 70 design Type Main battle tank Place …
76Metal spinning — A brass vase spun by hand. Mounted to the lathe spindle is the mandrel for the body of the vase a shell sits on the T rest. The foreground shows the mandrel for the base. Behind the finished vase are the spinning tools used to shape the metal.… …
77English longbow — The English longbow, also called the Welsh longbow, was a powerful type of medieval longbow (a tall bow for archery) about 6 ft 6 in (2.0 m) long used by the English, Scots and Welsh, both for hunting and as a weapon in medieval warfare. English… …
78Drill — 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… …
79Sten submachine gun — Infobox Weapon name= Carbine, Machine, Sten caption= Sten Mk. II (trigger mechanism cover is missing) origin=flagcountry|United Kingdom type=Submachine gun is ranged=yes is UK=yes service=1941 ndash;1960s used by=See Users wars=World War II,… …
80watch — /woch/, v.i. 1. to be alertly on the lookout, look attentively, or observe, as to see what comes, is done, or happens: to watch while an experiment is performed. 2. to look or wait attentively and expectantly (usually fol. by for): to watch for a …
