Large and beautiful mono and stereo graphoscope in blackened wood decorated with scrolls and foliage. Size 27x18cm.
 The first graphoscopes appeared in the mid-19th century. They were used to improve the viewing of photographs on paper. They were equipped with a magnifying lens.
 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 depth (as a reminder, the official date of the invention of photography is 1839). Furthermore, the principle of obtaining a stereoscopic image had already been established in antiquity by Euclid and further developed by Leonardo da Vinci in 1484.