Sputnik viewer and adapter?

[Paul Talbot <ptww@xxxxxxxxx>]

Tom Deering wrote:

> I am taking 
> delivery of a Sputnik I bought off of eBay.  The price was not low,
> but it sounded like it was mint, with all the accessories.
> 
> >This Sputnik, a stereo camera for 120 rollfilm is part of a terrific
> >outfit. The package includes the camera, lens caps, leather case,
> >viewer, printing frame, and instruction book.

Brenda asked about the printing frame; now I'm curious about the
viewer.  I've just been advised that "In the USSR in the sixties,
when you bought a Sputnik, you also got a Gomz stereo viewer."
Is the Gomz viewer the one you refer to Tom?

More generally, just what is a Gomz viewer?  Print or slide viewer?
What focal length and diameter are the lenses?  Does a person wearing
glasses find it convenient to use?

Also, what might be meant by "a Russian stereo macro adapter unit"
that someone acquired with their Gomz viewer?

Thanks!

Paul Talbot