Plotting Machine AN-5748 in Wooden Case Constellation The third APA-44 model was

The third APA-44 model was installed in a B-17 and employed with a new Western Electric search radar

This offering includes the crank and the leg straps

and its serial number prefix is AF-44

The luminous paint has faded to the typical orange tint

According to the F-94 Starfire Flight Manual:

Plotting Machine AN-5748 in Wooden Case Constellation The third APA-44 model wasHere 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. The kit includes the plotter (a protractor with base), a straight edge, a mounting clamp, an extra tension band, and an envelope of fasteners. This example is in its original wooden case,