Music box

device · 1796 · Industrial Revolution

A pinned cylinder plucks a comb and plays a tune.

What it is made of

Pinned cylinder — has part. The cylinder’s pins pluck the teeth of the comb.
Mainspring — has part. A mainspring turns the cylinder.

Principles and materials it uses

Brass — is made of. The cylinder is brass.
Iron — is made of. The comb is steel.

Take Music box apart