Padlock

device · 500 BC · Ancient world

A portable lock with a shackle.

What it is made of

• Metal shackle — has part. A steel clip.
• Padlock body — has part. A case with the mechanism.
• Pin tumbler lock — has part. A secret mechanism.
• Spring — has part. The mechanism’s springs.

Principles and materials it uses

• Iron — is made of. Roman padlocks were iron.
• Bronze — is made of. And bronze.

What it is a kind of

• Lock and key — is a kind of. A padlock.

Take Padlock apart

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