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The mid-18th century saw the development of mobile field artillery. ... a special tool to make a hole in the gunpowder bags. ... An 8-inch howitzer had a barrel ...
The 4.25mm Liliput is a centerfire cartridge originally produced in Austria for self-loading pocket pistols made by Erika before World War I.In 1920 the Liliput pistol was designed by August Menz of Suhl to use the cartridge.
Her secondary armament consisted of 17 BL 4-inch Mark IX guns, fitted in five triple and two single mounts. Repulse mounted a pair of QF 3-inch 20 cwt [Note 1] anti-aircraft guns mounted on the shelter deck abreast the rear funnel. [7] She mounted two submerged tubes for 21-inch (533 mm) torpedoes, one on each side forward of 'A' barbette. [8]
The QF 5.25-inch Mark I gun was the heaviest dual-purpose gun used by the Royal Navy during the Second World War. Although considered less than completely successful, it saw extensive service. Although considered less than completely successful, it saw extensive service.
Caterpillar D4H LGP (Low Ground Pressure) model, Eschborn, Germany. The Caterpillar D4 track-type tractor is a small bulldozer manufactured by Caterpillar Inc.. Caterpillar first introduced the RD4 in 1936, [1] as the diesel follow on to the successful CAT 30 gas model.
For 2.5-inch bays, actual dimensions are 2 + 3 ⁄ 4 inches (69.9 mm) wide, between 5 millimetres (0.20 in) and 3 ⁄ 4 inch (19.1 mm) high, and 3.955 inches (100.5 mm) deep. However, most laptops have drive bays smaller than the 15 mm specification. 2.5-inch hard drives may range from 7 mm to 15 mm in height.
From the BL Mark I gun of 1916 the 4.7-inch (120 mm) calibre was the mid-calibre weapon of the Royal Navy, used particularly on destroyers.Apart from some ships armed with QF 4-inch Mk V guns due to shortages, it remained the standard weapon for destroyers up to the W-class destroyers of 1943.
An example of this device is shown in the figure on the right; it had a 0.125-inch-diameter (3.2 mm) hole, was 1.9 in (48 mm) long, and 0.8 in (20 mm) in diameter. The quarter-wave resonance was calculated to be 1780 Hz, while the measured fundamental was 1625 Hz with detectable second and third harmonics.