Setting Compass on Sopwith Pup
Here we see a Sopwith Pup on a compass calibration circle, with fixed lines marking the cardinal directions.
Copyright IWM Q 67558
How to cite this article:
Rickard, J (12 August 2022), Setting Compass on Sopwith Pup , http://www.historyofwar.org/Pictures/pictures_sopwith_pup_compass.html