Please Upgrade to a newer browser
Have you and your friend stand on either ends of the devise. Look into the devise on one end and see your friend - who is otherwise concealed from view - at the other end of the periscope. This device is known mostly for its use as the "searching eye" of submarines.
Scientific Principle: Periscope
Needed Infrastructure: None
Size in mm: height: 700
width: 700
depth / length: 450
