Details
Stereo viewers
including a hand-painted stereo graphoscope, a photographic viewer, a Brewster-pattern hand-held steroscope with hinged top, two hand-held stereoscopes and an E. Ziégler hand-held photograph viewer (6)
including a hand-painted stereo graphoscope, a photographic viewer, a Brewster-pattern hand-held steroscope with hinged top, two hand-held stereoscopes and an E. Ziégler hand-held photograph viewer (6)