Gyros

• 1Q50.01 - Precession - Bicycle Wheels, Gyroscopes, and Tops
• 1Q50.20 - Bicycle Wheel - On Stand
• 1Q50.21 - Bicycle Wheels - Suspended
• 1Q50.25 - Double Wheel Gyro
• 1Q50.30 - MITAC Gyro
• 1Q50.40 - Suitcase Gyro
• 1Q50.56 - Ball On A Rotating Turntable
• 1Q50.70 - Gyroscopes
• 1Q50.72 - Gyroscopes - Ship Stabilizer
• 1Q50.90 - Maxwell's Tops