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Magnetic declination or variation is the angle on the horizontal plane between magnetic north ... area (western end of Long Island Sound), below, surveyed 124 years apart. The 1884 chart shows a variation of 8 degrees, 20 minutes West.


Magnetic declination (variation) calculator based on the IGRF magnetic field model. Estimates magnetic delination world-wide from 1900 - present.


Declination results are typically accurate to 30 minutes of arc, but environmental factors can cause magnetic field disturbances. The calculator provides an easy ...


Help: Magnetic declination calculator. Using the "Calculate Declination" form under the "Declination" tab of the Magnetic Field Calculators page, click " Calculate" ...


Feb 24, 2017 ... This calculator may be used to calculate the magnetic declination for a specified location and date based on the International Geomagnetic ...


Find your location or click on the map to display your magnetic declination, Browse countries What is Magnetic Declination?


Feb 24, 2017 ... Information on magnetic declination. ... Halley map of atlantic ocean with magnetic declination contour lines. Halley map. The secular variation ...


Magnetic declination adjustment values are easy to determine with these helpful map charts and page links.


Learn about magnetic declination effecting compass directions. ... Using this old map, the declination would be about 11 degrees East in 2010 - about 1 degree ...