What is a gyro compass?

A gyro compass is a type of non-magnetic compass that uses a gyroscope to find true north, rather than magnetic north. It operates on the principles of angular momentum and gyroscopic inertia, allowing it to maintain a stable reference to the Earth's rotation. Gyro compasses are commonly used in marine navigation, aviation, and by ships and submarines, as they are unaffected by magnetic fields and provide accurate heading information. Unlike traditional magnetic compasses, gyro compasses require electrical power and can take some time to stabilize after being powered on.