Zeiss-Ikon Stereo Viewer

Germany, 1920s

Designed for 45 x 107 mm stereoviews, this Zeiss-Ikon stereo viewer lacks interocular adjustment but features rack-and-pinion focusing and a mirrored top opening to let in light for paper stereoviews. In this design, the silver button on top must be pressed to allow insertion of the stereoview. The opening is blocked when the button is released, preventing the stereoview from sliding out.

Primary Material: Wood
Media Format: 45 x 107 mm glass or card
Light Source: Natural light
Focus: Adjustable
Interocular: Fixed