Pictures of Various Optics During WW2

Look like Imperial Japanese Navy bins to me.
20 x 120 mm Naval Binocular[/size]
Like these

http://www.snyderstreasures.com/pages/opticsjapan.htm









more pics here of huge bins. ( with Japanese optics nerds)
http://akiroom.com/redbook-e/kenkyukai12/kenkyukai201206.html

12 cm 20 deg. 20x, Made by Toyokawa Naval Works 1942