I love the internet.
I was in Oxford Street the other day, and photoed this gizmo, once the whole thing, and then a photo of the letters and numbers on the gizmo:
I love the internet because I could type those letters and numbers into it, and immediately learn that this is a pollution measuring device. To be more exact, this is a (see above) Continuous Particulate Monitor.
I tried reading this, but was unable to discern from it whether this process is applied to the emissions of a particular vehicle, or just to the air generally, in the general vicinity of the Continuous Particulate Monitor.
But the funny thing is, when I googled “bx 802”, I didn’t get any mention of any BX-802s, but lots of mentions of the BX-1020. Which I assume must be the more recent version of the BX-802.
Mind you, the internet did also suggest that BX 802 could be a chair.