Leather e lathe: o que têm em comum

1. Passo 1. Leather — é material para — Tourniquet. The strap of a tourniquet is leather.
2. Passo 2. Tourniquet — tem como parte — Screw thread. Petit’s tourniquet was tightened with a screw.
3. Passo 3. Screw thread — é utilizado em — Screw-cutting lathe. The lathe cuts precise standard threads.
4. Passo 4. Screw-cutting lathe — evoluiu de — Lathe. Maudslay added a lead screw and a slide rest.

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