When I was a very young lad in the late fifties this is what I used for visual observation. My brother brought it round as it belonged to our father and I will get Roger Davis to restore it. I thought it was lost forever.
I would be very carfull before you restore it. I would get it priced for insurance. Take it to an antique dealer who specializes in WW2 stuff. you may infact devalue it price by restoring it. Not that I know what I'm talking about but you never know.
I do realize that the scope has more value to you than a monetary value but it never hurts to research these things.
Fundamentally a pair of binoculars for seeing over the tall scope in front at star parties?
Very interesting, Bert. Looks like the distance between the field lenses can be adjusted? If so, what does that achieve? Range-finding - how is that achieved? How did you use them?
All I know it was made by the Nikko company, later changed to Nikon. My father never said a word about the war and his part in it. This is all we have.
I am not an expert on what it was really used for.