WW2 British Vickers Machine Gun Slide Rule and Webbing Pouch 1940

Rare Slide Rule for the .303 Vickers machine gun , marked 'RULE,SLIDE M.G. MK IV .303 VICKERS M.G. FOR MK VIII AMMN'.
Dated 1940 to rule & also 'MECO 1940' to webbing case.

Code: 13600