Correcting a Compass to find true north Magnetic Declination http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml Magnetic declination http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml Maps http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml NOAA http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml National Geophysical Data Center http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml magnetic declination http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml National Geophysical Data Center (NGDC) http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml this map http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml Compute Magnetic Declination http://www.ngdc.noaa.gov/geomag/declination.shtml Maps Compute Magnetic Declination Magnetic Declination http://www.ngdc.noaa.gov/geomag/ http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml NOAA PAGE http://www.ngdc.noaa.gov/geomag/declination.shtml National Geophysical Data Center: Magnetic Declination http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml NOAA PAGE http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml Magnetic Declination National Geophysical Data Center (NGDC) http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml http://www.ngdc.noaa.gov/geomag/declination.shtml