We intend to use this periscope inside a toy cardboard house we built for the kids. The plan is to bore a hole in the middle to place the periscope so they can see outside from inside the box. Sounds fun? Not exactly. The view is too small. When you look into it, you can only see an area the size of a single face in it. They should make this wide angle view. It is too hard to find and see anything, like looking for a tiny airplane up in the sky using a peephole. Not really worth it.Construction is fine. It is a piece of telescoping plastic pipe than extends to 14". But at least it would help if it is more functional than this.