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1987. Well, if you follow your compass north this year, you will be drawn towards a different place than 15 years ago. The direction in which the compass needle points is known as Magnetic North, and the angle between Magnetic North and the True North direction is called magnetic declination or variation. John Wiley. The My Open Country name is registered with the U.S. Patent and Trademark Office. >> would also be pulled down toward the ground and most likely not Cup the Brunton in your hands just above belt level, and rest your arms against your sides. Since my off-trail hikes are usually under 3 miles I feel that I have no need to adjust the compass, and I have not gotten myself lost yet. When youre navigating in the wilds, degrees matter. Holding the compass housing horizontal by keeping the bubble in the middle of the bulls-eye level, (a) tilt the mirror until the reflection of the object can be seen in the mirror, and (b) tilt the pointer arm of the Brunton so that the reflection of the tip of the 'gunsight' can just be seen in the mirror. Without it, youll be unable to get a true bearing or accurate compass reading. All the latest inspiration, tips and guides to help you plan your next Advnture! How to find the declination you need to set, How to set declination on most Brunton and Suunto compasses, How to account for declination on compasses without adjustable declination, Place your thumb on the center hub of the compass, then pinch. Find Your Declination Adjustment Value - The Compass Store Why are there two different poles? Along this particular line, both the geographic and magnetic north poles are in alignment so there is no declination. Note that we will be moving and adjusting the compass on the map. If youre in a situation where you need to navigate precisely and have a compass that lacks declination adjustment (but that has a declination scale printed inside the bezel), these are the steps: Deluxe Mirrored Sighting Compass with Declination. When you purchase through links on our site, we may earn an affiliate commission. A magnetic compass, including the compasses on most smart phones, does not point to the North Pole, or even to the North Magnetic Pole. subtract. I don't understand the need to adjust my compass for declination. Not loaded with features, but all the features you must have to navigate any terrain with your map. Clinometer - An added feature on good compasses that allows you to measure the angle of a slope. Whenever you transfer a magnetic bearing taken in the field to your map, you add the magnetic declination to get the true bearing. Great article, as a private pilot, we learned this using the "steam value is needed to obtain true north.. How do I correct my compass to the true bearing? Geary, D. 1995. Knowing the magnetic declination (the angle between true north and the horizontal trace of the magnetic field) for your location allows you to correct your compass for the magnetic field in your area. (Declination will have changed since 1976.) Using the compass housing as a ruler, draw a line on the surface -- this is the strike line. declination which a kid is probably going to loose. (Now a west declination is, in essence, added because you are subtracting a negative number. Brunton Pocket Transit - University of Texas at Austin I use a Swiss recta officers model Set your compass to 0, and always think about it. Be Expert With Map and Compass: The Complete If so, let us know in the comments box below. compass to 238 and follow it. Not only that, next year it will point someplace different than it does this year! Remember To Adjust In The Right Direction. As a result, the grid lines on your map actually point ever so slightly wide of True North. @$:zRrtUx9Ja 9%-[X)atZEbUW&"h{LC !tq2W4?\m5Y(#.7P"3]6Cx xR