Siren Disc 4 Rows of Holes with Blow Tube fibre the needle offers stability and

the needle offers stability and precision on the pin

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Siren Disc 4 Rows of Holes with Blow Tube fibre the needle offers stability andThis Siren Disc 4 Rows of Holes with Blow Tube is an apparatus that creates sound through air vibration. It has a disc with 4 rows of holes and a blow tube for air flow that can be controlled for variable pitch and frequency. It can be used for physics demos, musical effects, or as a component in alarms or warnings. The 4 rotating rows of 24, 30, 36, and 48 holes that create a natural musical chord when a fine jet of air is blown through them. Brand: