Screwdriver
device · 1500 · Early modern era
A tool for driving screws.
What it is made of
- Screwdriver shaft — has part. A steel rod.
- Screwdriver tip — has part. A flat or cross-shaped tip.
- Handle — has part. A handle.
Principles and materials it uses
- Screw thread — uses. It drives screws.
- Torque — uses. The handle creates torque.
- Iron — is made of. Screwdrivers are iron on a wooden handle.
- Wood — is made of. The handle is wooden.