I wouldn't want to try it on my house. Typical 1970s. No two walls are straight or parallel.
Does it have to auto level? The reason I ask is we were fitting new 400kV busbars to a gen transformer last week. The aluminium castings have to be bolted to the top of the bushings and then the bars craned in. I thought then that some sort of laser attached to the one casting could be used to line up the casting on the earth post. The red and blue phase bushings are normally at an angle compared to the next support. It would have made the job in the cherry picker much simpler if some sort of laser could have been used.