Egg beater and oil well: what they have in common

1. Step 1. Egg beater — has part — Crank. A handle.
2. Step 2. Crank — is used in — Windlass. The handle of a windlass is a crank.
3. Step 3. Windlass — is part of — Crane (ancient). The rope was wound on a windlass.
4. Step 4. Crane (ancient) — has part — Block and tackle. The crane lifted loads with a block and tackle.
5. Step 5. Block and tackle — is part of — Drilling rig. The block and tackle lifts the drill string.
6. Step 6. Drilling rig — is used in — Oil well. A well is drilled by a rig.

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