Bombing Angle Computer Mk 1 Ref 9/4482 RAF 1956 B-47 but the fluid in the

but the fluid in the rear chamber is absent and there is a slight internal rattle

It is in near perfect condition

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

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

Battleship Iowa

Bombing Angle Computer Mk 1 Ref 9/4482 RAF 1956 B-47 but the fluid in theThis 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.