Stereo viewer

A device for viewing a series of stereoscopic views disposed in pairs in columns on a card, said device comprising a generally flat quadrangular body having an axis of symmetry, a pair of windows in said body, means defining first and second pairs of channels on the front of said body disposed one on each side of said axis of symmetry, said first pair of channels being configured to enable said card to slide therein and said second pair of channels being superposed on said first pair of channels, a plate including a plurality of flat sections having edges transverse to said pairs of channels, adjacent sections being attached at adjoining transverse edges by hinges, one of said sections including two spaced eyepieces adapted to align with pairs of views in the respective columns of views, said second pair of channels being configured to enable at least part of said plate to slide therein, at least one section of said plate being slidable in said second pair of channels to move said one section to a deployed position in which said eyepieces lie in a plane parallel to and appropriately spaced from said front surface and opposite said windows, and a folded position in which all of said sections of said plate lie flat against the front of said body.