Compass, Magnetic
A magnetic compass is a navigational tool that uses the Earth's magnetic field to determine direction. It consists of a magnetized needle that aligns itself with the Earth's magnetic field, allowing the user to determine the direction of magnetic north. Magnetic compasses have been used for navigation since ancient times and are still widely used today, particularly in marine navigation. They are an essential tool for navigating at sea, as they provide a reliable means of determining direction even when other navigational aids are unavailable or unreliable.
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