Framer, from what I remember Erich is bang on, a mass produced sight usually issued to 'marksmen' within infantry sections, not much better than open sights but once you got used to it I'd imagine it did the job. I'd imagine that part of the logic behind the small size is that as using a telescopic sight takes longer than open sights, with something that small snap shooting would be easier, if that makes sense.

EDIT: Just dug up some stuff and the scope is the ZF41, what I had forgotten was that it comes with a bakalite box which I have seen fixed to the belts of soldiers thus enabling them to take it on and off as necessary (think how that would influence your zeroing).

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There's no honorable way to kill, no gentle way to destroy. There is nothing good in war. Except its ending.