A Large Roswell's Patent Table-Top Burr Walnut Stereoscope on a cornice base, probably by Negretti & Zambra (but without label) C 1875. Both glass & card Stereo cards can viewed against a fretwork rack framing a frosted glass background. Focusing is adjusted by sliding the rack back or forwards. In addition to the pair of stereo viewing lenses the stereoscope incorporates a large 16cm Zograscope or Graphoscope lens . This can be raised and lowered on a pair of brass rods to view prints & documents in detail. When not in use it swings underneath & is stored out of the way. The viewing platform can be adjusted to five different heights on a fret work support.
The stereoscope comes with forty eight stereo cards, and one glass slide, covering a good selection of genre & topograhical subjects.
Weight: 3.56 kg
Dimensions (closed): 51.5 x 28.5 x 14 cm. Maximum height: (fully extended) 66 cms
Condition: Complete & original with no major defects.
