Gyro Flight and Directional Indicators Technical Manual TO 30-15A-4 S2 Tracker very early indeed

very early indeed

likely to indicate the maximum acceptable range for a specific aircraft

They are presented as having been cut from the original panels in similar fashion

Here is an authentic WWII-era navigational plotter used by aircraft navigators to plan

The pointers and reset mechanism appear to work as intended

Gyro Flight and Directional Indicators Technical Manual TO 30-15A-4 S2 Tracker very early indeedThis is an original WWII era Technical Manual for gyroscopically operated Flight (Horizon) Indicators and Directional Indicators used across most bomber, fighter, and transport aircraft of the US Army Air Force and US Navy. This 140 page, loose leaf unbound manual reviews the basic information as well as in depth technical information on both instruments, including disassembly, repair, and maintenance. It is full of illustrations and diagrams. The