I just bought this Bertrand lens on Ebay from Russia. It was listed as Zeiss. Does anyone know anything about it? I'm wondering if it's really a LOMO, since the dovetails don't seem to match the Zeiss Standard. They seem a little small. I think there is supposed to be an ocular holder in the top, but it wasn't included. It seems like if it were really a Zeiss, it would have "Zeiss" stamped on in somewhere.
NU is a microscope manufactured by Zeiss Jena. These parts are not interchangeable to the Zeiss "Standard". The "Standard" was manufactured by Carl Zeiss West.