Authentic German Army signal lantern from the 1950's! This is one of the coolest items we have ever had. Opened up it measures about 12" wide, and 12" high. There are 2 windows, one on each side that open up to project the signal. One side, you slide in your red lens, and the other side you slide in the directional lens. There is a small burner that a flame comes out of to make the signal. Also has a carrying handle.