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Hunting
Maps, GPS and Google Earth
compass use
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<blockquote data-quote="Frog4aday" data-source="post: 1673645" data-attributes="member: 9308"><p>I carry a GPS and cell phone, but still pack my Silva compass 'just in case'. People get lost and go in circles all the time. Figure the compass can at least keep me going in a straight direction so I don't get MORE disoriented. In CO, I used to park the truck, find two prominent mountains, and shoot an azimuth from the truck to the mountains to get some triangulation on my starting location with the theory that it would help me find my way back to the truck as long as I could still see those two mountains and shoot an azimuth again. Thankfully it's never come to that...so far. But I still feel better having something that doesn't depend on batteries to work.</p><p></p><p>As for the gentleman whose compass was 30 degrees off, the first thing I thought of was the declination adjustment. In WA (where I learned to use a map and compass together) the declination adjustment from Geographic ("true") north and Magnetic north was 21 degrees (if memory is correct; it's been a long time!) We dialed that into our Silva's (for explorer search and rescue work.) For someone in New Orleans, there would be NO declination adjustment needed. Ahhh...the memories. (Thank GOD for GPS! But thank God more for the back-up compass if that GPS ever dies on me.)</p></blockquote><p></p>
[QUOTE="Frog4aday, post: 1673645, member: 9308"] I carry a GPS and cell phone, but still pack my Silva compass 'just in case'. People get lost and go in circles all the time. Figure the compass can at least keep me going in a straight direction so I don't get MORE disoriented. In CO, I used to park the truck, find two prominent mountains, and shoot an azimuth from the truck to the mountains to get some triangulation on my starting location with the theory that it would help me find my way back to the truck as long as I could still see those two mountains and shoot an azimuth again. Thankfully it's never come to that...so far. But I still feel better having something that doesn't depend on batteries to work. As for the gentleman whose compass was 30 degrees off, the first thing I thought of was the declination adjustment. In WA (where I learned to use a map and compass together) the declination adjustment from Geographic ("true") north and Magnetic north was 21 degrees (if memory is correct; it's been a long time!) We dialed that into our Silva's (for explorer search and rescue work.) For someone in New Orleans, there would be NO declination adjustment needed. Ahhh...the memories. (Thank GOD for GPS! But thank God more for the back-up compass if that GPS ever dies on me.) [/QUOTE]
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