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QF 4 inch Mk XVI gun breech mechanism diagrams.jpeg

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Description
English: Diagrams showing breech mechanism open (left gun of pair, at left) and closed (right gun of pair, at right), of British QF 4-inch Mk XVI naval gun.
Date
Source

Plate 7 in B.R. 257. Handbook for the 4 inch Q.F. Mark XVI* Gun on the H.A. Twin Mark XIX And Single Mark XX Mountings. G3821/41 , July 1941.


Scanned by Historic Naval Ships Association. Downloaded from http://www.hnsa.org/doc/pdf/br257.pdf
Author Naval Ordnance Department, Admiralty, UK
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(Reusing this file)
Public domain
This work created by an employee of the Government of the United Kingdom is in the public domain.

This is because it falls under one (or more) of the following:

  1. It is a photograph taken prior to 1 June 1957; or
  2. It was published prior to 1975; or
  3. It is an artistic work other than a photograph or engraving (e.g. a painting) which was created prior to 1975.

HMSO has declared that the expiry of crown copyright applies worldwide (ref: HMSO email reply)
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current01:23, 6 October 2011Thumbnail for version as of 01:23, 6 October 2011983 × 558 (140 KB)wikimediacommons>Rcbutcher{{Information |Description={{en|Diagrams showing breech mechanism open and closed, of British QF 4-inch Mk XVI naval gun.}} |Source=Plate 7 in B.R. 257. Handbook for the 4 inch Q.F. Mark XVI* Gun on the H.A. Twin Mark XI

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