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Syndicate
| Simple Machines |
Type |
|---|---|
| Differential Diagram | Image |
| Rotherham plough | Image |
| Pacemaker St. Jude | Image |
| Archimedes screw | Image |
| plow Greeks | Image |
| First Wheeled Vehicles | Image |
| Block and Tackle Pulleys | Image |
| Scratch Brushes | Image |
| forged tool to clean Roman plow | Image |
| Horse collar illustration | Image |