The Zeiss Ikon stereoscopes model 628/6 and the 628/8 are robust devices and support the viewing of glass and paper stereoviews. A frosted glass at the back illuminates the glass slides and a lid with mirror can be openend to view paper stereocards. The lenses can be focused and provide a large magnification that ensures an impressive viewing experience. The lenses of the 628/6 can be removed for cleaning.
- Zeiss Ikon Catalog 1929