Compass overhauling and maintenance
Magnetic compass need annually inspection and biannually deviation adjustment. However during his service it’s possible that some part of the body suffer an excess of heat due to a bad protective clothing (i.e. canvas cover), then a bubble might come. Normally bubbles comes when expansive membrane or others parts loss his watertight quality. Or maybe floating unit inside the bowl can lost his watertight and produce a bad behaivor of the compass card being deflected horizontally.
We have the solution: Magcompass works fine with a shore based compass workshop and servicing your needs.