Limestone blocks e micrometer: o que têm em comum

1. Passo 1. Limestone blocks — faz parte de — Egyptian pyramid. Limestone and granite blocks of masonry.
2. Passo 2. Egyptian pyramid — utiliza — Inclined plane. According to a common hypothesis, the blocks were raised on ramps.
3. Passo 3. Inclined plane — evoluiu para — Screw. A screw is an inclined plane wrapped around a cylinder.
4. Passo 4. Screw — é utilizado em — Micrometer. A precise screw with a 0.5 mm pitch.

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