What is the primary function of a compass in navigation?

The compass serves a fundamental role in navigation and orientation by indicating the direction of magnetic north. This allows pilots and navigators to determine their heading and navigate through various terrains, whether in aviation, maritime, or land travel. By understanding which way is north, users can orient themselves and plot courses accurately, which is crucial for safe and effective navigation.

While other tools like altimeters measure altitude, speed indicators provide an aircraft's speed, and icing detectors focus on atmospheric conditions, none of these fulfill the compass's primary function of helping users establish their directional position in relation to the Earth's magnetic field. This directional capability is essential for navigating effectively, especially in complex environments where clear visual references may be limited.