The Periscope Peephole For Kids

If for some reason a child goes to the front door how do they know who is there? Well they do not, but if the door had the “I see you door periscope peephole” that would not be a problem because the child would be able to see who was at the door.

The device works on the same principle as a periscope on a submarine, using peepholes and carefully placed mirrors to allow a clear line of site to adult height! The design shows it built into the door, but that is not always going to be possible, but it could run up the inside of the door.

Source [Gajitz]