How would you remove an air bubble from the liquid magnetic compass?

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Asked on July 16, 2021
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Invert the compass bowl in the gimbal arrangement to bring the expansion chamber uppermost. Undo the screw cap of the chamber and top up the fluid in the bowl with distilled water. This action will fill the bowl, forcing out the air bubble.

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Posted by marinetales
Answered on July 16, 2021