Scientific American, [NOVEMBER 12, 1887. 310. the extra length taken up by the folds. In manufacturing photographic apparatus on a large scale, as is now necessary to meet the rapidly in- creasing demands of the amateur and professional pho- tographer, very little care is taken by some manufac- … Fig. 6.—PLAN OF AN 8x10 TRUNCATED PYRAMIDAL the longest length of the sheet, as shown by the heavy BELLOWS. lines in the diagram, commencing % of an inch from the edge. These represent where each fold is to be end of a long, flat stick in a vise and then slide the made, which we will term fold…
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