> you can buy handheld "XRF guns" that perform a metal composition analysis on the spot Oh wow that's really neat, feels like something out of Star Trek (Trico

> you can buy handheld "XRF guns" that perform a metal composition analysis on the spot Oh wow that's really neat, feels like something out of Star Trek (Tricorder). > (They are not cheap.) Ok, but what is "not cheap"? A hundred? A couple hundred? Might be a cool thing to have Clicks link Oh dear god, $20K-40K. Yep, I think I'll pass but super cool nonetheless. Thank you for introducing me to that technology!