hrough the slotted side uprights and The changes have made the holder much lighter, mors The desire of amateur and professional photograph- clamped, then the lens board on the front may also be accessible, and more complete. ers to employ a substitute for glass in photography, on pushed upward as… … Fig. 3.-THE DOUBLE BISIKG FBONT. as high buildings, church steeples, etc., enabling the operator to get pictures without distortion of lines. In Fig. 4 is seen the new construction of the ground glass frame, and the peculiar mode of fastening it to the reversible back frame of the camera. The…
Patents · Railroad · Machine · Patented · Scientific American · Phonograph · Perspective view · Hot water · Electric light · Ground glass · American railroad · Sturtevant mill · Sewing machine · War ship · Floor plans
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