Ratchet
part · 100 BC · Ancient world
A toothed wheel with a pawl — rotation in one direction.
What it is made of
- Spring — has part. The pawl spring.
Principles and materials it uses
- Iron — is made of. Ratchets are iron.
Where it is used
- Wrench — is part of. A ratchet wrench.
- Haemostat — is part of. A ratchet lock.
- Turnstile — is part of. A ratchet.
- Windlass — is part of. A ratchet holds the load.
- Anchor windlass — is part of. A stopper.