3 ms·

They have handheld XRF analyzers nowadays. They cost around $20k.

• signaturefish 1y ago
  Huh, impressive - I guess I'm out of date (and/or the people I listen to about such things have a working XRF already and don't want to replace a working unit).
  • yread 1y ago
    You can get a used one for like 3k. I don't really need it but I have it on my santa's list for ages already. One day he will deliver I hope
• amelius 1y ago
  Interesting. How deep into a gold bar would that work?