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/F3 11 0 R This article is part of our series: Intro to Navigation. south but your diagram clearly shows it moving North. North - Wikipedia Explore our library of skills tutorials, activity checklists, buying guides and advice on how to care for your gear. << Luckily, learning how to adjust for magnetic declination is easy, especially if you already know how to use a compass and how to read a map (if you havent yet been converted to map and compass use, our feature Why learn navigation? Why is this important? PDF Lab 1: Using a Brunton Compass & Constructing a Pace and Compass Map 4 0 obj There are a few ways to solve this extra challenge of finding true north - either changing your compass or using math in your head. What Are Sleeping Pad R-Values (And Why Are They Important)? map. Not loaded with features, but all the features you must have to navigate any terrain with your map. Raise your voice in the movement to protect and share life outdoors. subtract). The GPS receiver should now be set to provide direction information (e.g., bearing and heading) in degrees true. The green line bisecting North America is the 0-degree line of magnetic declination, i.e. Models are joint research with: The Cooperative it is really interesting to have the update, that a map produced 10 life did I find truths like for example Christopher Columbus If you are using a severely outdated map, then the declination quoted on it may be wrong. Place the compass on your map with the edge along a north-south grid line. Suunto Traverse - Features - Compass Using the Compass. Tucson Aircraft Graveyard: positive magnetic variation or declination of 10 28' 48" (10.48), Compass automatically compensated for the positive declination value of 10 28' 48" (10.48), Cape Town: negative magnetic variation or declination of 24 30' 36" (24.51). Once you do that, the page will refresh, and your longitude and latitude will be filled in automatically. But how, and why do we adjust for it?In this video, I'll demonstrate how to adjust on both a Brunton and a Silva compass.Get up to date on the channel, future content, live, super huge thanks! >> NY 10036. I will be in Wyoming using a map Because topo maps are flat and the Earth is spherical, cartographers have to make slight variations to compensate for the curvature of the Earths surface. "S.63 deg.43 min. Hold MENU. ), Whenever you transfer a bearing taken from your map to the field, you subtract the magnetic declination to get the magnetic bearing to follow. If the declination is an east declination, adjust the azimuth/quadrant ring on the Brunton compass so that the index pointer (the thing that looks like a sharpened nail on the inside of the Brunton case on the side opposite the mirrored lid) is pointing to the left of the 0 mark on the ring. This compass doesn't need any tool. So now I actually go 225. Keeping all of those ditties in alignment, move the clinometer arm until the bubble moves to the middle of the bar level. He climbs when he should be writing, writes when he should be sleeping, has fun always. To orient the map, first: Line up the edge of the compass with the edge of the map, or Line up the meridian lines (the parallel lines inside the bezel) with a north/south grid line on the map This latter option is a cheat since grid lines have their own declination value.