Lead screw and kite: what they have in common

1. Step 1. Lead screw — is part of — Screw-cutting lathe. The lead screw moves the cutting tool.
2. Step 2. Screw-cutting lathe — evolved from — Lathe. Maudslay added a lead screw and a slide rest.
3. Step 3. Lathe — has part — Rope. The bowstring wraps around the workpiece and turns it.
4. Step 4. Rope — is part of — Kite. The line holds the kite and passes the tension to the hand.

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