Container corner castings and micrometer: what they have in common

1. Step 1. Container corner castings — is part of — Shipping container. Standard corner fittings for cranes and securing.
2. Step 2. Shipping container — is used in — Truck. A container moves from ship to truck without being unloaded.
3. Step 3. Truck — evolved into — Amphibious vehicle. A truck chassis.
4. Step 4. Amphibious vehicle — has part — Propeller. A propeller.
5. Step 5. Propeller — uses — Screw. A propeller “screws” itself into the water, like an Archimedes’ screw.
6. Step 6. Screw — is used in — Micrometer. A precise screw with a 0.5 mm pitch.

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