Micrometer thimble with scale and steam turbine: what they have in common

1. Step 1. Micrometer thimble with scale — is part of — Micrometer. Hundredths of a millimetre.
2. Step 2. Micrometer — uses — Screw. A precise screw with a 0.5 mm pitch.
3. Step 3. Screw — is used in — Propeller. A propeller “screws” itself into the water, like an Archimedes’ screw.
4. Step 4. Propeller — is part of — Torpedo. Propellers.
5. Step 5. Torpedo — is part of — Destroyer. Torpedoes.
6. Step 6. Destroyer — has part — Steam turbine. Turbines.

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