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Compass

magnetic compasses north direction

Compass, instrument used to indicate direction. Navigators on ships and aircraft use a compass to determine the direction in which they are heading. There are 2 main kinds of compasses: magnetic compasses and gyrocompasses. Magnetic compasses point to the magnetic north pole; adjustments must be made to determine the true north.

See also: Navigation.

Compass plant [next] [back] Comparative psychology

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