AbidingOhmsLaw

Important! Before you drill, cut, puncture or do anything with them you need to remove the residual gas or they may explode on you!

1. obtain or make a valve tool for propane cylinder valves (check youtube).
2. screw on a torch head and try to light it to burn off as much as you can EVEN WHEN THE TORCH WONT LIGHT THERE IS STILL PROPANE IN THE CYLINDER
3. outside in a well ventilated area remove the torch and press the center valve in to verify that pressure is equalized
4. look for the fill valve off center on the top, using the valve tool remove the valve.
5. fill the cylinder ALL THE WAY with water, this will force out any remaining gas.
6. the cylinder should now be safe to work on

paywall

Spot on, it’s a bone density measuring device.

If you look at the other videos on YouTube account you will see that this is part of an “Osteo Pro”, a medical device for measuring bone density in your feet.

D

^^^THIS^^^

ditto

I’ll pass on reddit AND google.

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ATi EGA Wonder, it could do a whopping 640 x 350 with 16 colors!