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The BL 13.5 inch Mk V gun was a British heavy naval gun, introduced in 1912 as the main armament for the new super-dreadnought battleships of the Orion class.The calibre was 13.5 inches (343 mm) and the barrels were 45 calibres long i.e. 607.5 inches (15.43 m).
0.188 mm 7.401 thou 1 ⁄ 12 of a ligne. This unit is usually called the Truchet point in English. Prior to the French Revolution the Fournier point was also in use. It was 1 ⁄ 6 of a ligne or 1 ⁄ 864 of the smaller French foot. ligne: 1 ⁄ 144: 2.256 mm 88.81 thou 1 ⁄ 12 of a pouce. This corresponds to the line, a traditional English ...
Early superbones, and the Holton instrument designed for Ferguson (who was primarily a trumpet player), have very narrow almost trumpet-like bore diameters of less than 0.500 inches (12.7 mm). Later models from Schagerl and Wessex use a larger bore of 0.525 inches (13.3 mm) found more commonly on modern tenor trombones.
These engines used the standard class 4 boiler again, but pressed to 225 psi (1,550 kPa). and using smaller coupled wheels of 5 feet 3 inches (1.600 m) diameter, and one-half inch (13 mm) increase in cylinder diameter, nominal tractive effort rose to 31,170 pounds (14,140 kg).
Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...
Ordnance QF 3 inch howitzer was a howitzer fitted to British cruiser and infantry type tanks of the Second World War so they could fire a smoke shell in "close support" of other tanks or infantry. HE shells were also available. Earlier British tanks were fitted with a 3.7 in howitzer, based on the QF 3.7-inch mountain howitzer.
A 16-inch caliber gun was beyond US manufacturing capabilities at this time though and the largest gun possible was the 13-inch (330 mm)/35 caliber. The Navy intended to use this gun in short-range action against heavily armored targets and was fitted to the first true battleship in the US Navy, Indiana .
4.5 inch gun may refer to: QF 4.5-inch howitzer, a British Army weapon of the World War I era; QF 4.5-inch Mk I – V naval gun, a British family of naval guns, actually of 4.45 inches (113 mm) calibre, in service 1938 through 2013; 4.5-inch Mark 8 naval gun, a British naval gun in service 1972 through at least 2018