Gyroscopes

thumb|250px|right|A gyroscope thumb|right|A gyroscope in operation, showing the freedom of rotation in all three axes. The rotor will maintain its spin axis direction regardless of the orientation of the outer frame.

thumb|Illustration of a simple three-axis gimbal set; the center ring can be vertically fixed

laser interferometer designed to measure angular velocity

gyroscope that uses fiber optics and light interference

type of flywheel used for three axis attitude control in spacecraft

gyroscope that uses a vibrating structure to determine the rate of rotation. A vibrating structure gyroscope functions much like the halteres of flies

attitude control device

thumb|A Wild Heerbrugg|Wild GAK gyroscope mounted on a Wild T-16 theodolite. In surveying, a gyrotheodolite (also: surveying gyro) is an instrument composed of a gyrocompass mounted to a theodolite. It is used to determine the orientation of true north. It is the main instrument for orientation in mine surveying and in tunnel engineering, where astronomical star sights are not visible and GPS does not work.

device used for orientation based on quantum mechanics