What would be the best way to protect my compass from becoming de-magnitized while stored? How strong does a magnetic field need to be to disorient the needle? It is a Brunton Classic Map Compass, and I can't wait to use it when hiking along mapped trails. Chances are I'll need to carry it around lots of metal tools, but will a simple case protect it from de-magnitization? I'm trying to learn how to use a compass and I'm worried about screwing with its magnetic sensitivity. Any feedback would be greatly appreciated.