My compass suddenly stuck in northerly directions some time after I mounted the Trigg transponder (I think, it took a while before I noticed. While in testphase I' not in the need of a compass, every flight). It now is in the hole two-o'clock.
I looked this forum over for ideas, and found the paperclip trick: two or three clips together hanging as a string could point out the magnetism as were it a compass itself.
And so I did, just to discover that apparently all my switches and fuses are somewhat magnetised....
Magnetism
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