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Rubens Tube Without Amplifier 2M Early Years Set of 20 See and

$368.50

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Description

Set of 20 See and Solve Number Puzzles in one giant bumper pack

• Rendzina (calcareous soil)

• Easy-Read Meter

1N5401 Diode

Rubens Tube Without Amplifier 2M Early Years Set of 20 See andIntended for teacher demonstrations only. The Rubens' Tube is an Aluminium tube with a row of small holes drilled along the top and 10W loudspeaker mounted at one end. Full instructions included. Users will need a gas source (Natural or LPG) and a power signal generator to run the speaker.

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