well one is that the true north is the north pole.And the magnetic north is the N on a magnet.
true
Difference between Compass direction and True north.
magnetic variation
13.17 degrees
True north is 90 degrees north of the equator, where the north pole is located. Plant north is used to simplify the design process by designating one wall of the plant or building as being north, regardless of the angle that it may differ from true north.
true
magnetic variation
Difference between Compass direction and True north.
Magnetic declination or variation.
magnetic variation
25 degrees West
It is measured exactly the same in the Southern hemisphere (no difference between the two hemispheres). It is the difference between magnetic north and true north and it varies all over the globe. Magnetic declination (also called magnetic variation) is positive when magnetic north is east of true north (clockwise) and it is negative when magnetic north is west of true north (anti-clockwise).
13.17 degrees
The south's economy shifted from ariculture to manufacturing
Since the Earth's magnetic poles are not located at the geographic poles, a magnetic compass doesn't point to 'true' (geographic) north. The DIFFERENCE angle between magnetic north and true north is the magnetic variation or declination where you are. It changes for different locations.
Assuming the subject is magnetic declination the difference between the north pole and the true north pole this difference, is the magnetic declination, there is not information on what purpose it serves.
yes it does and a compass shows magnetic north. this is where declination takes course between the difference of the two