The American annual of photography . erty map showing all pantograph reduction was made for check purposes, andwhen the photographic prints were laid on this outline thecorners were found to coincide very accurately. Another interesting piece of work was suddenly thrust uponme when I was called upon to enlarge a section of one ofthe United States Topographical maps, the enlargement to times greater than the original to fit a certain scalemap. In this I was handicapped by not having a largeenough enlarging lantern to take in the full size section. Acopy was made of smaller
The American annual of photography . erty map showing all pantograph reduction was made for check purposes, andwhen the photographic prints were laid on this outline thecorners were found to coincide very accurately. Another interesting piece of work was suddenly thrust uponme when I was called upon to enlarge a section of one ofthe United States Topographical maps, the enlargement to times greater than the original to fit a certain scalemap. In this I was handicapped by not having a largeenough enlarging lantern to take in the full size section. Acopy was made of smaller dimensions than the original, thiswas then placed in the enlarging lantern and enlarged times, bringing it to the size of map required. Themap was made in four sections, the negative having beendivided so that one section could be enlarged at a time untilall four sections were printed, the sections were then puttogether making the complete map, a test for accuracy wasmade and all points were found to coincide to a GENTLE BREAKERS. DR. W. E. ZIEGENFUSS. Z^
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Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1922
