The new Vickers-Maxim 9.2-inch, 47-caliber, wire-wound gun, for intermediate battery of British battleships. Breech open, loading tray with chrge swung round in position for loading. Breech closed, loading tray with charge swung clear of breech. Proving-ground mount.
Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past
Restoration by: magscanner