Screwdriver e kite: o que têm em comum

1. Passo 1. Screwdriver — utiliza — Screw thread. It drives screws.
2. Passo 2. Screw thread — é utilizado em — Screw-cutting lathe. The lathe cuts precise standard threads.
3. Passo 3. Screw-cutting lathe — evoluiu de — Lathe. Maudslay added a lead screw and a slide rest.
4. Passo 4. Lathe — tem como parte — Rope. The bowstring wraps around the workpiece and turns it.
5. Passo 5. Rope — faz parte de — Kite. The line holds the kite and passes the tension to the hand.

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