Image: No 1 DA Percussion Fuze Mk III Diagram

Description: Diagram of British No. 1 Direct Action percussion fuze, with cap, Mk III. Armstrong fuze in service 1900 - 1918. Requires a heavy impact to activate. Has no loose or movable parts to move forward on impact. Head of fuze has a copper disc supporting a steel needle over a detonator. The needle must be crushed in to explode the fuze. A cap or screw plug covers the top of the fuze to provide safety during transport, and is removed just before loading. For use with Common lyddite shell for the following guns : BL 60 pounder Gun BL 60 inch 30 cwt Howitzer BL 5.4 inch Howitzer BL 5 inch Howitzer BLC 6 inch siege gun QF 4.7 inch Gun QF 4.5 inch Howitzer
Title: No 1 DA Percussion Fuze Mk III Diagram
Credit: Plate XLIV, pages 266, 301 in "Treatise on Ammunition" 10th Edition, 1915. Facsimile reprint by Imperial War Museum and Naval & Military Press, 2003.
Author: War Office, UK
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 1972; or It is an artistic work other than a photograph or engraving (e.g. a painting) which was created prior to 1972. 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