Monitoring instrumentation erected for the construction of Crossrail, Stratford Place, London Borough of Camden.  The equipment uses lasers to determine any movement in the buildings, this can then be corrected by pumping spoil into the ground.  Taken around midday on Saturday the 25th of September 2014.
<a href="//commons.wikimedia.org/wiki/User:Mtaylor848" title="User:Mtaylor848">Mtaylor848</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>