What is the big tube that German soldiers in WW2 look through like binoculars? I can't find anything about it and I only saw it in quite a few pictures. - Quora
![German WWII Flak D.F. 10 x 80 Binocular Optics by Josef Schneider & Co – International Military Antiques German WWII Flak D.F. 10 x 80 Binocular Optics by Josef Schneider & Co – International Military Antiques](https://www.ima-usa.com/cdn/shop/products/ON7450__07.jpg?v=1597896946)
German WWII Flak D.F. 10 x 80 Binocular Optics by Josef Schneider & Co – International Military Antiques
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