Central London. Has anyone got any idea what these might be:
Some form of air quality measurement?
I saw a documentary a while ago about the building of something (maybe the Shard?) where the problems of taking down whatever was on the site before and building the new thing's foundations (at least) were thought to be likely to cause movement in some or all of the surrounding buildings. IIRC they said that sensors were put on buildings all around to try to detect movement. It might be something like that.
It's an automatic laser targeting and acquisition system for smart delivery of ordnance against pesky rioters.
Air quality monitoring?
Care to describe it as well?
Round my way some odd bollards have been seen apparently in the middle of footways, when I asked the man in the dodgy reflective vest about it, he said it was for finding leaks in water mains by placing them on exposed parts of the main under access covers, they could find the leak by the delay of the sound of it.
This sounds a bit dubious to me...
Brian
Possibly to do with this lot... See bottom right paragraph of 1st page and following text
OK looking through the rest of the pictures I took I can tell you it's South Molton Street W1, Taken 25 Sept 2011.
The reflectors are round, about 3cm in diameter inside a 7cm frame also round mounted on an L bracket which is bolted to the masonry with a single bolt. There are several of them on each property at varying heights. All the reflectors are aligned in the same direction, probably to face the installation at the end of the street.
This consists of a couple of wall boxes with three antennas associated with it, one some kind of rod omni and two flat-plate directional ones at right angles to each other, this suggests it is part of a wider network.
There is a shiny black dome stood off from the wall on a long pole, so it could see the reflectors, imagine a black rotating beacon on an emergency vehicle and you get the idea. I think that's actually what it is, a rotating, or oscillating IR laser, working like a 2D barcode scanner.
Incidently its a pedestrian street not included in Streetview.
Monitoring Crossrail tunnelling, perhaps?
Looks very likley, put South Molton Street in here
Some years ago when there was a water leak in the street, I was surprised to see the Scottish Water chaps who arrived first placing their long metal valve 'keys' against the ground then putting their ears against the tops of the metal handles. I asked, and they said they could hear water flowing underground and this was a simple way to decide where to start digging up the road. It was somewhat reminiscent of the wooden ear trumpets doctors used to use to listen to babies in the womb.
I've seen that done for gas leaks.
Jesus. I bet it felt a bit dubious too, as a blind walker, to cannon into that. Have they no sense?
And I've seen it done on more than one occasion when there's a hose-pipe ban in place. In days round here when you needed a "sprinkler licence" several people without those bits of paper were caught this way.
Cheers, Jake ======================================= Urgling from the East End of Swansea Bay where sometimes it's raining and sometimes it's not.
a network of base stations linked at some frequency most likely in the low GHz. (Black cylinder being the WiFi aerial, and the flat square things being the radio links to adjacent base stations.) There are more cabinets there than I would expect though, so I could well be wrong.
However, I don't think these two items are related.
Or a screwdriver with the handle to your ear to listen to the internals of an engine.
SteveW
Then could be monitoring subsidence related to the Crossrail excavations below.
Not very good at testing the HT leads though.
Is anyone in the physical position to ask somebody in the building? Just a thought. (I'm nowhere near).
Normally I would be within walking distance. But, I am currently in Italy (where there has been a heatwave for the past month) and I'm staying put until the 'lympics is over.
>HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.