I started with Ubuntu back when you could put in your parent’s home address and they sent you free CDs. I’m on Arch (since about 2010), and I can’t change.

This is a Thermo handheld XRF. I wasn’t working at this place when it was purchased, but it was somewhere between $40k-$60k.

When I found out they had lead last year, I went to work with the cup to confirm. This is a handheld XRF, which depends on the specific spacing of electrons in atoms to determine the identity. Not much to it other than point and shoot! (with shielding)

showing lead (Pb) from the pattern.