JamesBon92007
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Selling a compressed air device to folks who haven't got a clue about Boyle's law and gas embolisms? What can possibly go wrong?
![How to Use Your Diving Lung.jpg How to Use Your Diving Lung.jpg](https://scubaboard.com/community/data/attachments/349/349267-cefea39e0f356ce65911ca8463991235.jpg)
Here's everything you need to know
This is from the July 1953 Popular Science. This one did not come with a hand pump.
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