The compass has been used for centuries as a tool for navigation.
It is an instrument that aligns a free pivoting bar magnet (called the
needle) in Earth's magnetic field.
Since the invisible lines of the magnetic field are oriented in a
north/south direction, the needle will orient itself in a north/south
direction. The other cardinal points of the compass (east, west, and
south) are defined in relation to north.
Pilots use a compass to determine direction when flying airplanes.
Boaters, hikers, and hunters are examples of other people who rely