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Educational toy/gadget I cannot find...

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in Physics

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Cannot find even a picture of it.

It is a fountain enclosed inside a clear plastic cylinder, about 10cm diam x 20 cm high, with a blue dyed fluid in it.  After 'charging it' upside-down, when placed upright, a centered nozzle squirted upright, a stream as a fountain, with a duration of a few minutes.

I think I bought it from 'Edmund Scientific' mid seventies.

Anyone knows the name of it ?

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Yesssss !  Thank you    +1

Glad to be of assistance ☺

Edited by Endy0816

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