Precipitation Static, USAAF Manual No. 10 Dec 1944 SBD Dauntless Here is WWII-era vacuum-driven Gyro

Here is WWII-era vacuum-driven Gyro Horizon Indicator Type AN-5736-1

All pages appear to be intact

The single pointer and course setting arrow rotate

It is clearly 'experienced' but in very good condition given its age

Precipitation Static, USAAF Manual No. 10 Dec 1944 SBD Dauntless Here is WWII-era vacuum-driven GyroThis is an original training manual covering the topic of Precipitation Static published by the US Army Air Corps in 1944 for use in training pilots. The manual discusses the build up of static charge on the aircraft in flight during different atmospheric conditions and how this affects radio receiving equipment. This 36 page manual is in good condition given its age. It came to us from the estate of a B 17 flight instructor.