Plotting Computer 16 x 16 in P-38 so the angle on the

so the angle on the right side is in fact 180 - 112

as used in aircraft of the British RAF and the Royal Australian Air Force

The diagrams

The center knob adjusts the center 'airplane' silhouette up/down

or Elevator/Nose Position Indicator

Plotting Computer 16 x 16 in P-38 so the angle on theThis Plotting Computer is comprised of 3 clear disks with linear black, green, and blue markings that rotate about an axis at the center of a fixed circle marked in degrees. A clear hinged and latched polycarbonate lid overlays the active elements of the device. We assume that this was used in an instructional setting, but know nothing else about this device.