German 12×60 Anti-Aircraft Flak Binocular

A brilliant example of German wartime optics, the Zeiss Flak glass was used as an anti-aircraft rangefinder on land but also on ships to track incoming aircraft. The German lens craftsmen were historically among the finest. During the Secord World War, Zeiss was one of the principal manufacturers to the German forces. This type of anti-aircraft binocular was used atop German concrete towers or flak towers that were built around major cities like Berlin.