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Finds Identification and Valuation
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<blockquote data-quote="user 4386" data-source="post: 658733" data-attributes="member: 4386"><p>I don't think a Garmin GPS has to be moving to determine true north - it is actually determining magnetic north and then applying a correction</p><p></p><p>"Garmin uses the<strong> NOAA World Magnetic Model</strong> in our code for some devices to compute True North from the Magnetic North, and Magnetic North to compute True North. Not updating the magnetic models in our products will cause the True North computed from the Magnetic North and vice versa to not be accurate, especially above the Arctic Circle".</p><p></p><p>Also, it does not affect what coordinates the GPS gives you. It only affects directions like bearing, course etc. However, when following a bearing to a waypoint with known coordinates the bearing pointer on the GPS will point you directly to the waypoint regardless</p></blockquote><p></p>
[QUOTE="user 4386, post: 658733, member: 4386"] I don't think a Garmin GPS has to be moving to determine true north - it is actually determining magnetic north and then applying a correction "Garmin uses the[B] NOAA World Magnetic Model[/B] in our code for some devices to compute True North from the Magnetic North, and Magnetic North to compute True North. Not updating the magnetic models in our products will cause the True North computed from the Magnetic North and vice versa to not be accurate, especially above the Arctic Circle". Also, it does not affect what coordinates the GPS gives you. It only affects directions like bearing, course etc. However, when following a bearing to a waypoint with known coordinates the bearing pointer on the GPS will point you directly to the waypoint regardless [/QUOTE]
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