Worm gear

part · 200 BC · Ancient world

A screw-like worm turns a gear wheel at a right angle.

Principles and materials it uses

• Screw — uses. The worm is a screw.
• Bronze — is made of. Worm gears are bronze.

Where it is used

• Outboard motor — is part of. An angle gearbox.

What it is a kind of

• Gear — is a kind of. A kind of gear train.

Take Worm gear apart

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