Vector Plotting Machine AN-5748 in Original Packaging Bf-109 The case is 8 inches

The case is 8 inches tall

The case opens by gently lifting the retaining band from the small retaining peg

Here is a nice specimen of a WWII-era electrical Switchable Tachometer

This is an original Pilot's Flight Operation Manual for the North American P-51H Mustang as used by the US Army Air Force

This is an original (not a photocopy) Flight Manual for the iconic F-4B Phantom jet fighter of the US Navy NAVWEPS 01-245FDB-1 published Jan 15

Vector Plotting Machine AN-5748 in Original Packaging Bf-109 The case is 8 inchesHere is an authentic WWII era navigational plotter used by aircraft navigators to plan, plot, and track their course along a chart. The plotter would be affixed to a navigator's map table and laid upon the map of the flight plan, typically in a large aircraft. It is essentially a flight computer as it provides the navigator with the integral calculators for heading, track, true air speed, and ground speed. This example is in its original packaging,