Notice a striking resemblance to something you might be reading this on?
Meanwhile... a binocular microscope... would be stereo in other words.
I have a Bausch & Lomb StereoZoom 4 which I use for retouching negatives because you can see depth where the brush is going...
Thanks for giving me a great idea tkamiya... This weekend I have plans to do some printing... I can mount up that microscope over my light table and "proof" my negatives for sharpness before committing them to paper.