What is Magnetic Dection
• The Magnetic North Pole is slightly different from the True
North Pole.
• The Watch, like most magnetic compass, points to the
Magnetic North Pole. On the contrary, everything measured
on a map is related to the True North Pole.
• The angular difference between Magnetic North Pole and
True North Pole is called magnetic declination. Its
magnitude (degrees and minutes) and direction (easterly
and westerly) depend on where you are in the world.
• For a serious compass user who intends to perform an
accurate navigation, the compass must be adjusted for
magnetic declination.
• The Watch also includes a compensation setting for
Magnetic Declination. Check the coming section
"Calibrating the compass - Magnetic Declination Mode" for
more details.
Magnetic Declination Information
• Most topographic maps include a small arrow which shows
the magnetic north pole and magnetic declination
information.
• For the benefit of the user, this manual includes the
magnetic declinations for some major cities. Check the
coming section 'Magnetic Declination at Major Cities' for
more details.
• For those cities, their names are not included on the list,
please check the online magnetic declination information at:
1.http://www.geomag.nrcan.gc.ca/calc/mdcal-eng.php
2.http://www.ngdc.noaa.gov/cgi-bin/seg/gmag/fldsnth1.pl
12.4 Compass Mode - Magnetic Declination
Magnetic
North
Magnetic
Declination
Magnetic
Declination
Ture North
Summary of Contents for Mission Sensor
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