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File:No81MkIFuzeDiagram.jpg

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Diagram of British No. 81 Mark I Time & Percussion fuze, Naval service, World War I era.
It is an improvement on Mk 80 fuze. The lighting pellet is to the side rather than central, to avoid risk of accidental firing caused by heavy knocks. This also allows for a recess in the nut to facilitate use of an automatic fuze setter.
Body is of aluminium, threaded for 2-inch fuze gauge.
Burn time is 30 seconds at rest.
Intended for long-range shrapnel fire with the following guns :

  • BL 13.5 inch Mk V
  • BL 12 inch
  • BL 9.2 inch
  • BL 7.5 inch (except Mk III & Mk IV)
  • BL 6 inch
  • BL 4 inch Mk VII - VIII
  • QF 4 inch Mk IV - V
  • QF 12 pounder 18 cwt
  • QF 12 pounder 4 cwt
Date data correct as at 1 August 1914
Source

Plate LXIII, Pages 326-328, 338 in "Treatise on Ammunition" 10th Edition, 1915.


Facsimile reprint by Imperial War Museum and Naval & Military Press, 2003.
Author War Office, UK


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current03:57, 5 July 2008Thumbnail for version as of 03:57, 5 July 20081,200 × 674 (129 KB)Rcbutcher (talk | contribs){{Information |Description=Diagram of Britisk No. 81 Mark I Time & Percussion fuze, World War I era. |Source=Plate LXIII in "Treatise on Ammunition" 10th Edition, 1915. <br>Facsimile reprint by Imperial War Museum and Naval & Military Press, 2003. |Date=d

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