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Magnetic declination calculator and other parameters from the National Geophysical Data Center (NGDC), part of the US Department of Commerce, National Oceanic and Atmospheric Administration (NOAA), National Environmental Satellite, Data and Information Service ... Estimated Value of Magnetic Declination...
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www.ngdc.noaa.gov/geomagmodels/Declination.jsp
www.ngdc.noaa.gov/geomagmodels/Declination.jsp
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Magnetic declination - Wikipedia, the free encyclopedia
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The magnetic declination (also known as grid magnetic angle in military circles, if the grid is aligned to true north) at any point on the Earth is the angle between the local magnetic field—the d...
en.wikipedia.org/wiki/Magnetic_declination
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Magnetic declination adjustment values are easy to determine with these helpful map charts and page links. ... Results You will see your declination value at the top of this magnetic values list. Remember, Easterly declination values are represented as positive numbers and Westerly declination values are represented...
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www.thecompassstore.com/decvar.html
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South African Journal of Geology; August 1984; v. 87; no. 2; p. 79-85; ... Alert me when this article is cited ... Email this article to a friend...
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sajg.geoscienceworld.org/cgi/content/abstract/87/2/79
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You may not need to find the declination before you leave home, actually. There is a fast and pretty good method to find the declination whereever you are. This method has also the advantage that corrects for local conditions that may be present (I am thankful towards Jim Cross who pointed this out to me).
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www.learn-orienteering.org/old/lesson3.html
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n October 6 the captains made two observations of the sun for magnetic declination (also called variation of the compass). The equipment used were the circumferentor (surveying compass), sextant, artificial horizon, spirit level and chronometer.
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www.lewis-clark.org/content/vws_bergo-canoecamp5.htm
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Magnetic declination varies across the earth's surface and over time. Presently, in Wisconsin we experience very small values ... Many books on the subject of orienteering or navigating with a compass can be ordered on the Internet. Your local bookstore or camping outfitter is also likely to carry books on the subject.
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www.sco.wisc.edu/maps/magneticdeclination.php
www.sco.wisc.edu/maps/magneticdeclination.php
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The magnetic declination (usually refers to the true-magnetic angle but may specify grid magnetic angle in military circles) at any point on the Earth is the angle between the local magnetic field—the direction the north end of a compass points—and true north.
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www.answers.com/topic/magnetic-declination
www.answers.com/topic/magnetic-declination
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Aeronautical Charts, available at or near local airports that give flight lessons, show a more complete picture of magnetic declination. The charts show lines of equal magnetic declination called isogonic lines.
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www.erin.toronto.edu/~w3gibo/properties_of_magnetic_fie...
www.erin.toronto.edu/~w3gibo/properties_of_magnetic_field_at_.htm
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