+Pack of wild Pugs Posted March 23, 2010 Share Posted March 23, 2010 I use my IPhone to geocache with. On the compass setting it has two options, True North or Magnetic North. Which one should I use? Quote Link to comment
+narcissa Posted March 23, 2010 Share Posted March 23, 2010 Depends entirely on what you're doing. Just remember which one you've set to. Where I live, there's a good 13 or 14 degree difference between the two, so any geocache that uses bearings will specify True or Magnetic. Quote Link to comment
+DENelson83 Posted March 23, 2010 Share Posted March 23, 2010 Unless a cache tells me to use magnetic north or I'm caching by airplane, I always set it to true. Quote Link to comment
+edscott Posted March 24, 2010 Share Posted March 24, 2010 I use my IPhone to geocache with. On the compass setting it has two options, True North or Magnetic North. Which one should I use? If you are using a map, set it the same way the map is oriented. If you are just using it as a general guide it doesn't really matter as long as you know how it is set. It's always good to know the approximate declination where you are hiking. Quote Link to comment
+Markwell Posted March 24, 2010 Share Posted March 24, 2010 http://www.markwell.us/geofaq.htm#truemag Quote Link to comment
+Titus1919 Posted March 24, 2010 Share Posted March 24, 2010 For Salem OR the magnetic variation is 17E or -17Deg. Quote Link to comment
GermanSailor Posted March 24, 2010 Share Posted March 24, 2010 I use my IPhone to geocache with. On the compass setting it has two options, True North or Magnetic North. Which one should I use? I don't have an Iphone. But my GPSr is set to true north. Here in Germany it doesn't make a difference (var is 1-2°). True north has the advantage that it shows the numbers, which I can use directly on a chart. Magnetic north is good, if you use them for a compass. You can check you local variation (declination if you want) here. GermanSailor Quote Link to comment
+Tequila Posted March 24, 2010 Share Posted March 24, 2010 If you are navigating to a cache, it doesn't matter. Lat / Long is a position not a direction. If you are doing a multi or puzzle cache that requires waypoint projection, the listing should tell you whether they are using True or Magnetic. Quote Link to comment
+DragonsWest Posted March 24, 2010 Share Posted March 24, 2010 We of the True North Brigade will only ever acknowledge the point where the meridians meet. We tolerate non-believers, though remain watchful of their endeavours. Quote Link to comment
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