Blog e micrometer: o que têm em comum

1. Passo 1. Blog — evoluiu de — Newspaper. A personal publication.
2. Passo 2. Newspaper — utiliza — Rotary printing press. Mass print runs.
3. Passo 3. Rotary printing press — evoluiu de — Gutenberg printing press. Cylinders instead of a flat press.
4. Passo 4. Gutenberg printing press — tem como parte — Movable type. Text is set from metal type.
5. Passo 5. Movable type — funciona como — Interchangeable parts. Movable type is an early case of interchangeable parts: identical letters move from line to line.
6. Passo 6. Interchangeable parts — utiliza — Micrometer. Precise measurement ensures interchangeability.

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