This is in someone else's lab, I have no idea what it's for.

Biochemist, mass spectrometry witch, caretaker for the nanoflow liquid chromatographs. Trans woman, lesbian. Recumbent cyclist. Wisconsin, USA
This is in someone else's lab, I have no idea what it's for.
The one on the right is used for measuring flow speed through regular tubing, while the perivascular one is used for measuring flow through a single blood vessel. This line of products is actually set to be discontinued this year!