This precision deductive reckoning device was developed in the 1920s by Maj Ralph Bagnold for navigation in the desert. In WWII he formed and was the first commanding officer of the Long Range Desert Group.
A quick video about using the sun compass for practice or emergency navigation. I had to simplify the subject matter a bit but I think there is enough information here to learn how to use and make a sun compass of your own, even if it might be a little crude.
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