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Medical and Scientific Antique Prop Hire

Perforated Disk Acoustic Siren

Perforated Disk Acoustic Siren
Perforated Disk Acoustic Siren

The disk is rotated and air is blown through the holes in the disk via a straw to make a siren noise. The pitch of the siren can be changed by altering the speed of rotation.

Prop ID: 3110

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