Training Manual, Sperry Automatic Computing Gunsights Type K3, K4, K5 UC-43 which rotates the checklist around

which rotates the checklist around a vertical axis

Pipsqueak was a simple radio navigation system used by the British during the early part of World War II

The two neon bulb holders are in place

Here is an authentic WWI aeronautical compass with a very curious history

Peoples Liberation Committee

Training Manual, Sperry Automatic Computing Gunsights Type K3, K4, K5 UC-43 which rotates the checklist aroundThis is an original WWII era training manual for the Sperry Automatic Computing Gunsights Types K3, K4, and K5 as used in bomber aircraft of the US Army Air Force and US Navy, such as the B 17 and B 24. Entitled 'Work Sheets', this manual was used in the training of armorers at the Armament Department at Lowry Field, Colorado. The K3, K4, and K5 gunsights were used in manned gun turrets. This 60 page manual describes the disassembly, adjustment,