What are the functions of a magnetic compass ?
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Magnetic compass, in navigation or surveying, an instrument for determining direction on the surface of Earth by means of a magnetic pointer that aligns itself with Earth's magnetic field.
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Magnetic compass works on the directive property of a magnet. It is the most familiar compass type. It's needle is magnetic and allowed to rotate in a horizontal plane of the Earth’s Magnetic Field, which points in the north-south direction. The magnetic field exerts torque. One end of the needle always point north and is painted red. It is used for navigation purposes.
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