The primary purpose of a compass is to indicate direction. A compass consists of a magnetized needle that aligns itself with the Earth's magnetic field, pointing towards magnetic north. This tool is essential for navigation, helping travelers remain oriented in unfamiliar terrains, whether in hiking, maritime, or aviation contexts. By using a compass, one can accurately determine their heading, make informed decisions about routes, and avoid getting lost. Compasses have been vital to explorers and adventurers throughout history, contributing significantly to the advancement of navigation techniques and map-making.