No sky

This is a clever and very advanced bit of kit which I have taken on hire for a few days. Conventionally SV survey kit must get a good view of the sky to initialise but this one has the ability to track satellites in difficult environments like this one here. Apart from a model number on the casing it looks absolutely identical to my own R10 (this is an R12) but I am told everything is different internally.

I had a good soaking today.