. Sessional papers of the Dominion of Canada 1915 . ToiocRArnicAL .suR\/:ys uraxch 33 SESSIONAL PAPER No. 25b The whole arrangement consists of three parts, the easel A, on which the sensitivepaper is placed, the camera B, which carries the negative F and lens G, and thelight C, which illuminates the negative, H being ground glass betwen the negativeand the light. The easel is supportal on a frame of steel tubing with four 2^-inchposts, the lower ends of which are embedded in the concrete floor, making the frameperfectly rigid. The dimensions of the frame are 5 feet wide and 11 feet long. Aste
. Sessional papers of the Dominion of Canada 1915 . ToiocRArnicAL .suR\/:ys uraxch 33 SESSIONAL PAPER No. 25b The whole arrangement consists of three parts, the easel A, on which the sensitivepaper is placed, the camera B, which carries the negative F and lens G, and thelight C, which illuminates the negative, H being ground glass betwen the negativeand the light. The easel is supportal on a frame of steel tubing with four 2^-inchposts, the lower ends of which are embedded in the concrete floor, making the frameperfectly rigid. The dimensions of the frame are 5 feet wide and 11 feet long. Asteel track I (Fig. 6) runs the length of the frame on each side. A rack J runs Fig. 6—Rack and Scale for easfcl carriage—Enlarging Camera. the frame supporting the carriage D which carries the easel, and enabled it to be movedforward or backward by means of a hand wheel E and pinions K which engage therack. The easel is 4 feet by 5 feet, and will take an enlargement of that size. \ 25b—3 34 DEPARTMENT OF THE INTERIOR 5 GEORGE A. 1915 The camera is 4 feet long and 2 feet square, and will take a negative up to 20inches square. It is supported on a heavy frame bolted to the floor. Adjustment isprovided for by the crank N (Fig. 7), operating pinion 0 on rack P.
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Keywords: ., bookauthorcanadapa, bookcentury1800, bookdecade1860, bookyear1868
