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细节
Collapsible Graphoscope
French,[?]., rosewood veneered body, with a pair of rack and pinion focusing lenses, stereograph holder, 13cm., diameter magnifying lens, folding into a matching rosewood case
French,[?]., rosewood veneered body, with a pair of rack and pinion focusing lenses, stereograph holder, 13cm., diameter magnifying lens, folding into a matching rosewood case
出版
Paul Wing (1996), Stereoscopes The First One Hundred Years, p. 131-146.