I am new to this site and I expect I'll be on here more often.
I had a question for all of you in regards to identifying certain WWII relics.
I cannot seem to find any information on this particular Ocular Device.
I can read the Japanese well enough to know it says Japan Optical Technical Corporation and I know the inside is a list of parts like special use camera or microscope, joining rubber, illuminator, color lens and cleaning cloth. However I have yet to find anything online that looks like this or knows where it might have been used.