Image: RBL 7 inch Armstrong breech diagram

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Description: Diagrams showing breech mechanism of British RBL 7 inch Armstrong gun.
Title: RBL 7 inch Armstrong breech diagram
Credit: Alexander Lyman Holley, "A treatise on Ordnance and Armor" published by D Van Nostrand, New York, 1865. Downloaded from https://archive.org/details/treatiseonordnan00hollrich
Author: Artist not identified.
Permission: This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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Image:RBL 7-inch Armstrong breech diagram.jpg

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Armstrong gun

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