Image: RBL 7-inch Armstrong gun on wooden carriage

Description: A British naval Armstrong 7-inch (178 mm) 110-pounder rifled breech-loading gun on a wooden slide carriage.
Title: RBL 7-inch Armstrong gun on wooden carriage
Credit: Scanned from page 9 of Hodges, Peter, The Big Gun: Battleship Main Armament 1860-1945. Annapolis, Maryland: Naval Institute Press, 1981. ISBN 0-87021-917-0. Originally uploaded to EN Wikipedia as en:File:RBL 7-inch Armstrong gun on wooden carriage.jpg by en:user:Mdnavman 12 July 2010.
Author: not stated. assumed Royal Navy.
Permission: This work created by the United Kingdom Government is in the public domain. This is because it is one of the following: It is a photograph taken prior to 1 June 1957; or It was published prior to 1973; or It is an artistic work other than a photograph or engraving (e.g. a painting) which was created prior to 1973.HMSO has declared that the expiry of Crown Copyrights applies worldwide (ref: HMSO Email Reply) More information. See also Copyright and Crown copyright artistic works.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No