My muon detector is setup at #gpn23
You can find it on the sticker table.
There is also a poster nearby explaining how it works.

(Please don't steal our scope!)

Found a picture for another #NameThatWare challenge.
Since its quite easy for people that have opened similar devices, the first image is only a section of the full picture. The 2nd post shows more of the thing.

As always, try to explain your guesses. What is your deduction based on? Why can't it be another similar thing?
And hide those words behind a CW to not spoil it for others.

If you are familiar with this kind of device, try to figure out the specific make and model.

Aus aktuellem Anlass:

"Remember kids, the only difference between Science and screwing around is writing it down."