Horse bit and screw press: what they have in common

1. Step 1. Horse bit — is part of — Bit and bridle. Metal in the horse’s mouth.
2. Step 2. Bit and bridle — uses — Lever. The bit acts as a lever on the jaw.
3. Step 3. Lever — is part of — Screw press. A lever for turning the screw.

Open Evothings