Magnetic compass | Invention, History, & Facts | Britannica
https://www.britannica.com/technology/magnetic-compass
WEBFeb 27, 2024 · 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. The magnetic compass is the oldest type of compass and is used in aircraft, ships, and land vehicles and by surveyors.
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