The current issue (October 2013) of Mountain Pro—the United Kingdom's leading magazine for the outdoor professional—is online. See pages 28 and 29 for a good article on how the magnetic compass REALLY works. Entitled "A Space Odyssey," it's authored by none other than Lyle Brotherton, one of the world's leading land navigation instructors and author of the Ultimate Land Navigation Manual. This is an excellent magazine for outdoor operators. Look for a SAR team to be profiled in the January '14 issue. Read the Mountain Pro.
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