Scarff Ring

The Scarff ring was a type of machine gun mounting developed during the First World War by Warrant Officer (Gunner) F. W. Scarff of the Admiralty Air Department for use on two-seater aircraft. The mount incorporated bungee cord suspension in elevation to compensate for the weight of the gun and allowed a gunner standing in an open cockpit to swivel and elevate his weapon (a Lewis machine gun) quickly, and easily fire in any direction.

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Scarff ring on a Bristol F.2b                                                         photo credit  Shuttleworth Collection
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Twin Lewis machine guns mounted on a Scarff Ring