Telephone and windlass: what they have in common

1. Step 1. Telephone — has part — Rotary dial. A dial.
2. Step 2. Rotary dial — has part — Spring. A return spring.
3. Step 3. Spring — is part of — Ratchet. The pawl spring.
4. Step 4. Ratchet — is part of — Windlass. A ratchet holds the load.

Open Evothings