Wheelset and GPS (satellite navigation): what they have in common

1. Step 1. Wheelset — has part — Axle. A common axle.
2. Step 2. Axle — is part of — Potter’s wheel. A vertical axis.
3. Step 3. Potter’s wheel — has part — Flywheel. A lower flywheel turned by the foot.
4. Step 4. Flywheel — includes — Reaction wheel. A flywheel.
5. Step 5. Reaction wheel — is part of — Artificial satellite. Attitude control.
6. Step 6. Artificial satellite — is part of — GPS (satellite navigation). A constellation of satellites.

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