GRAPHOSCOPE AND STEREO VIEWERS
comprising a wooden Graphoscope viewer, with black ebonised body, 7-inch diameter magnifying lens, hinged sections and strut angle adjustment; an Ica 45 x 107mm., stereo viewer, wood-body with a pair of rack and pinion focusing eyepieces; an Underwood & Underwood Holmes-pattern stereo viewer; thirty various stereo cards and approximately sixty-five 45 x 107mm., stereo postives
GRAPHOSCOPE AND STEREO VIEWERS
comprising a wooden Graphoscope viewer, with black ebonised body, 7-inch diameter magnifying lens, hinged sections and strut angle adjustment; an Ica 45 x 107mm., stereo viewer, wood-body with a pair of rack and pinion focusing eyepieces; an Underwood & Underwood Holmes-pattern stereo viewer; thirty various stereo cards and approximately sixty-five 45 x 107mm., stereo postives
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