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if you are using a 3/8" diameter compass just to keep track of north, you are are not "navigating by compass". I do the same thing by looking at the sky. If you cannot take actual bearings, or follow a precise angle, then the compass is just an aid, not a navigation tool. I wasn't aware that they could simply reverse, but that certainly throws a wrench into the whole myth of "dependability" of compass navigation. <img src="/forums/images/graemlins/tongue.gif" alt="" />