Aircraft carrier and screw press: what they have in common

1. Step 1. Aircraft carrier — evolved from — Ironclad. The first aircraft carriers were converted from battleships and cruisers.
2. Step 2. Ironclad — has part — Watt steam engine. Steam engines.
3. Step 3. Watt steam engine — is part of — Rotary printing press. The first rotary presses were steam-driven.
4. Step 4. Rotary printing press — evolved from — Gutenberg printing press. Cylinders instead of a flat press.
5. Step 5. Gutenberg printing press — has part — Screw press. Gutenberg adapted the screw press known from pressing grapes.

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