3.5 in. height and width.
Gyroscopes are used in many modern devices, including inertial guidance systems, stabilizers for ships and airborne vehicles, and other devices that measure or help to maintain orientation.
Follow the included instructions to make the gyroscope seem to defy gravity, since the orientation of its axis is unaffected by tilting or rotating the mounting.
A more precise, easy-to-use version of the original toy gyroscope, first made in 1917. Color may vary.