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Music Box Mechanism

Item # P7-7330

$18.85
On Sale $18.85
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Buy 6 and pay $17.70 each!

Turn your whole chalkboard into a speaker! This music box mechanism is quiet on its own, but just hold it against a large object and hear a dramatic increase in volume!
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Turn your whole chalkboard into a speaker!

This music box mechanism is quiet on its own, but hold it against a large object (table, chalkboard, window, paper cone, drum) and hear a dramatic increase in volume! It's a simple but memorable demonstration of how sound energy transfers through the process of resonance.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Products being sold are not toys. They are for Educational / Laboratory use only. They are not for use by children 12 and under.

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