Play music with a ruler.

It is not a ruler it is a musical instrument... Or both! The Musical Ruler will make you an instant musical genius while helping you measure and make straight lines at the same time. Dish out those sick twangs as you slide and flick the living day lights out of this plastic ruler. It also comes with a song book to help you start along but why stop there when you can play whatever music your heart desires.

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Buy on www.amazon.com
Under $25