T thedigger Joined Jan 1, 2014 Messages 1,057 Reaction score 1,272 Jul 20, 2021 #1 This is very interesting with different machine testing precious metals. https://www.youtube.com/watch?v=pEEc_LI0UbE
This is very interesting with different machine testing precious metals. https://www.youtube.com/watch?v=pEEc_LI0UbE