The window behind him is on the other side of a column and impossible to clean in any normal manner. I suggested a small steam machine with a hose would do the job with a wire to support the hose.
But, before we go that expense he came up with this contraption. Not bad, he tells me he can tighten everything up so it will rigid but even so, I think the length to the pad should be a bit shorter to be able to apply more pressure. He tells me the head swivels every which way, which is good.
Naturally, nothing will happen until the boss comes and she can test it out.
...and do the job. :)
Now I come to think of it, she is going to need a handle like a sycthe to help her support the weight and perhaps a season at the health club pumping iron.
Maybe the steam cleaner will come cheaper in the end.