11. Stanley produced a'Panoptic Stereoscope 'in 1855, which was financially successful. 12. Pairs were used at 500 meter spacing producing stereoscopes for the British Meteorological Office. 13. Stereoscopes are still a relatively undiscovered collectible.14. A simple stereoscope is limited in the size of the image that may be used. 15. And five years later, according to what he discovered, he invented the stereoscope . 16. There were also some 300 stereoscope negatives of various sizes taken between 1895 and 1915. 17. He corresponded with Southworth & Hawes and purchased one or two of their parlor stereoscopes . 18. Stereoscopy became popular during Victorian times with the invention of the prism stereoscope by David Brewster. 19. The stereo camera combined the refracting stereoscope with two separate cameras which were placed slightly apart. 20. As the name implies, " Stereoscope " explores " the divided self ."
