Mystery Object...

...points awarded for anyone who can identify the location of today's blip, but TOP marks to anyone who can tell me what it's for, as that's the bit I can't figure out. Have seen it so many times, and could make an educated guess, but proven fact would be a bonus!

Forgive such a relatively uninspired blip this evening - house chaos due to old bathroom being demolished, and the debris seems to have spread to every room in the house! Ah well, it'll be worth it, so not complainin', just sayin'!