Stereoscopic viewer - In its wooden case

In its wooden box measuring 18.5x18.5x11.5 cm.

Large ogee eyepieces, dual control: rack and pinion focusing, variable interpupillary distance.

Stereoscopic photography is as old as "flat" photography (the kind of photography we know today). The invention of stereoscopic images even predates photography itself, since in 1838, Wheatstone, a member of the Royal Society of London, invented a mirror-based device that reproduced the illusion of depth (as a reminder, the official date of the invention of photography is 1839).

Moreover, the principle of obtaining a relief image had already been established in Antiquity by Euclid and taken up again by Leonardo da Vinci in 1484.