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Effective firing range. 23,900 yd (21,900 m) at 15° elevation. The 12"/50 caliber Mark 7 gun (spoken "twelve-inch-fifty-caliber") was a United States Navy 's naval gun that first entered service in 1912. Initially designed for use with the Wyoming class of dreadnought battleships, the Mark 7 also armed the Argentine Navy 's Rivadavia -class ...
The gun originated from a desire for a longer 12 in (30 cm) gun than the existing RML 12-inch 35-ton gun.Experiments in 1874 with both 12 in (30 cm) and 12.5 in (32 cm) versions 3 ft (91 cm) longer than the existing 12 in (30 cm) gun showed the 12.5 in (32 cm) calibre was more suitable, and further experiments showed a projectile of 800 lb (360 kg) could be fired with a charge of 130 lb (59 kg ...
The 19-inch (482.6 mm) standard rack arrangement is widely used throughout the telecommunication, computing, audio, video, entertainment and other industries, though the Western Electric 23-inch standard, with holes on 1-inch (25.4 mm) centers, is still used in legacy ILEC / CLEC facilities. A 19-inch rack used for switches at the DE-CIX in ...
12-inch mortar. 12-inch mortar may refer to: 12-inch coast defense mortar, a mortar used by the Coast Artillery Corps of the United States Army 1885–1945. Mortier de 12 Gribeauval, a mortar used by the French Army from 1780 to the mid-19th century. Category: Disambiguation pages.
Amatol. Filling weight. 94 lb (42.64 kg) The British Ordnance BL 12 inch gun Mk IX on truck, railway mounted surplus 12 inch Mk IX W naval guns, manufactured by Woolwich Arsenal in 1906, [2] [note 1] on various railway platforms to provide mobile long-range heavy artillery for the British Army on the Western Front in World War I .
12 inches (304.8 mm) Breech. Welin interrupted screw. Muzzle velocity. 2,700 ft/s (823 m/s) [4] Maximum firing range. 22,860 m (25,000 yd) [5] The BL 12 inch Gun Mark X [note 1] was a British 45-calibre naval gun which was mounted as primary armament on battleships and battlecruisers from 1906. It first appeared on HMS Dreadnought .
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