Loading...Basement flat periscope mirrors so you can see street level view down stairs
A mirror the size of your basement flat window placed outside and opposite the window, and another placed on the wall just above your window. Each mirror is actually made from 5 millimeter high strips of mirror angled at 45 degrees. If both mirrors are positioned correctly, you get to see a street level view from the basement flat.
Maybe a strategicly placed web cam and projector would do the trick. Seems simpler than making a stack of periscopes line up correctly.
If you placed 2 sets of mirrored venetial blinds in the right place this could work to give you a view of “up there” when looking straight out onto what was a flat wall. But you would need mirrow bilnds that stay still.