4.7 inch gun

A 4.7 inch Gun is any of a number of British-built 120 mm naval artillery guns. Several of these guns were designed and manufactured by the Elswick Ordnance Company, part of Armstrong Whitworth. They were a major export item and hence were actually of 120 mm calibre (4.724 inches) to meet the requirements of metricised navies (although the size was ultimately based on a 12-pound round shot), 4.7 inch is an approximation used for the British designation. 4.7 inch guns include:

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