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Rosettes foldout: cardinal directions?
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Posts: 3,233 Threads: 251 Thanks Received: 1,188 in 679 posts Thanks Given: 394 Joined: Dec 2015 Reputation: 7
30-06-2021, 06:49 PM
Floating compasses were around in the 12th century. I'll see if I can find the references. People knew how to stroke needles on lodestones and then float them to find magnetic north (or the Pole Star, they assumed it was pointing at that).
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