Lungtest machine

Can you get the wheel to turn by blowing into the lung test machine?

The aim of this machine is to persuade people to blow into the machine with all their strength so hard that the wheel turns.
Anyone who knows the trick will do it easily and without anything happening to them. Anyone who doesn't know the trick will have their face full of charcoal within seconds and look like a chimney sweep :)

What's important for those demonstrating the machine is to make it look like it's incredibly difficult to get the wheel to run. Because only when it looks difficult will the person who is supposed to be put in it give their all and blow in as hard as possible.

The lung test machine is already filled and comes with a can of reserve powder (charcoal).


35,00 €
incl. VAT , plus shipping costs
ca.: 3 - 9 Workdays Foreign countries
pce
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