The stereoscope and stereoscopic photography (1890)
Drouin, F. (Felix) · Bradford ; London : Percy Lund, The Country Press · leaf 53
Fig. 30. 46 THE STEREOSCOPE the eyes. This precaution, often neglected, is,however, of real use. Figs. 30 and 31 are models of stereoscopeswith prismatic lenses, which until comparativelyrecently were the forms usually sold in thiscountry. They are made like the preceding one. … Fig- 3i. The front can be removed or opened, for theprisms to be cleaned ; the opposite end is fittedwith ground glass, so that the apparatus serveseither for transparencies or for ordinary photo-graphs. * Duboscq was the first to construct a stereoscope withground glass at one end, for the use of…
Stereoscope · Photography, Stereoscopic
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