The Ancient "Wheatstone Process" !

If I can learn how to do the Wheatstone stereocope/process from Bernard, I might be able to exhibt my stereo process photographs this way.

From Wikipedia:

https://en.wikipedia.org/wiki/Stereoscope

Wheatstone Process

Wheatstone stereoscope 

The earliest type of stereoscope was invented by Sir Charles Wheatshone in 1838. It used a pair of mirrors at 45 degree angles to the user's eyes, each reflecting a picture located off to the side. It demonstrated the importance of binocular depth perception by showing that when two pictures simulating left-eye and right-eye views of the same object are presented so that each eye sees only the image designed for it, but apparently in the same location, the brain will fuse the two and accept them as a view of one solid three-dimensional object. Wheatstone's stereoscope was introduced in the year before the first practical photographic process became available, so drawings were used. This type of stereoscope has the advantage that the two pictures can be very large if desired.