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Armstrong gun deployed by Japan during the Boshin War (1868–69). An Armstrong gun was a uniquely designed type of rifled breech-loading field and heavy gun designed by Sir William Armstrong and manufactured in England beginning in 1855 by the Elswick Ordnance Company and the Royal Arsenal at Woolwich.
The abandonment of the Armstrong breech-loading design led Britain to begin a major program of building rifled muzzle-loaders to equip its fleet. The Armstrong 110-pound gun was succeeded by various RML 7 and 8-inch guns. 7-inch Armstrong breech-loaders under construction at the time of cancellation were completed as RML 64-pounder muzzle-loaders.
It retained the Armstrong steel barrel surrounded by wrought-iron coils under tension, but replaced the multiple thin wrought-iron coils shrunk around it by a single larger coil (10 in (25 cm) Mark I) or 2 coils (Mark II); the trunnion ring was now welded to other coils; and it eliminated Armstrong's expensive forged breech-piece. [5]
Magma supply rate is also known as the Armstrong unit, where 1 Armstrong Unit = 1 cubic kilometre per year (32 m 3 /s). [2] Armstrong unit can also refer to volcanic flux rate per length of arc in discussions of volcanic arcs, in that case km2/year.
While the Royal Navy made its own guns at Woolwich, Armstrong's Elswick Ordnance Company in Newcastle was merged back into the Armstrong company. Elswick also continued to produce heavy guns, but now only for export. One of these was a 7-inch RML, referred to by the Dutch and others as a 18 cm Armstrong gun.
The RML 12-inch 25-ton guns were large rifled muzzle-loading guns of mid-late 1800s used as primary armament on British ironclad turret battleships and coastal monitors, and also ashore for coast defence. They were the shorter and less powerful of the two 12-inch (305-mm) British RML guns, the other being the 35-ton gun.
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3579 S High St, Columbus, OH · Directions · (614) 409-0683