The earth's magnetic field has two magnetic poles. These magnetic poles are the magnetic South Pole and North Pole. The earth's magnetic poles are located at approximately 12° offset from the earth's geographical poles. At the magnetic North Pole, the gridlines of the magnetic field are vertical to the earth's surface. The needle of a compass, for example, will point to this magnetic pole. At the magnetic South Pole, the magnetic lines leave the earth’s surface. The earth’s magnetic field does not run parallel to the earth’s surface. It meets the earth surface at a variety of angles