Bombing Angle Computer Mk 1 Ref 9/4482 RAF 1956 B-47 Through its use the pilot

Through its use the pilot is enabled to set the carburetor mixture controls so that the mixture is not lean enough to injure the engine and not rich enough to cause high fuel consumption

Stores Ref 6A/1649

assuming to be in seconds (since it does not run)

The three colors of the brochures may indicate 3 different series

Battleship Iowa

Bombing Angle Computer Mk 1 Ref 9/4482 RAF 1956 B-47 Through its use the pilotThis is an original Bombing Angle Computer Mk 1 Ref No 9 4882 as used by bomb aimers of the British RAF. This heavy 8 inch metal calculator was first used during WWII in bombers such as the Lancaster. This version, Mod. Inst. D. 38. LNP R 3 1956, was likely from 1956 and was used in Canberra's and possibly early V bombers. Its in terrific condition given its age.