According to Wikipedia, a gyroscope is a device that is used to measure or maintain orientation, based on the principles of angular momentum. One typical type of gyroscope is made by suspending a larger rotor inside three rings called gimbals. Mounting each of these rotors on high quality bearing surfaces insures that very little torque can be exerted on the inside rotor. This means that when the inner wheel is rapidly spun, it will maintain it's direction, even if the outside framework of the gimbals changes.  It's a cool way to introduce elementary laws of physics to your students--and this massive gyroscope will ensure all the students will be able to see clearly what's happening! Mounted on a  heavy stable cast iron base, with a baked hammertone finish, this gyroscope is ideal for demonstration in the classroom setting. Features all metal construction. Highly recommended for your next physics lesson, for a cool educational item to display in the classroom, or for use in your science fair project!

Size is approximately 50 mm diameter x 250 mm height.

Box Size: 13.25in (33.66cm) x 6.00in (15.24cm) x 5.75in (14.61cm)

Recommended for ages 13 and older.

Weight: 4 lb 0 oz ( 1.81 kg )