Gimbal rings and tunnelling shield: what they have in common

1. Step 1. Gimbal rings — is part of — Gyroscope. Gimbals that give the rotor freedom.
2. Step 2. Gyroscope — has part — Ball bearing. Legs.
3. Step 3. Ball bearing — is part of — Conveyor belt. The rollers turn on bearings.
4. Step 4. Conveyor belt — is part of — Tunnel boring machine. Spoil is removed by a conveyor.
5. Step 5. Tunnel boring machine — evolved from — Tunnelling shield. A development of the tunnelling shield.

Open Evothings