Ampower Lumotrace system of preparing hull parts at Bethlehem-Sparrows Point Shipyard; template drawing (1:10 scale) is photographed and resulting negative projected full size onto steel plate where image is marked out by center punch and chalk line; negatives for one ship can be stored in small filing cabinet; projector is situated in tower approximately 64 ft above layout table.
Photo template technique speeds shipyard production
Indus Photography
Industrial Photography ; 6 , n 8
1957
2 pages
Aufsatz (Zeitschrift)
Englisch
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