Word: trimetrogon
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Dates: during 1944-1944
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...most important new invention is "trimetrogon" photography. This enables a flyer to photograph the ground below from horizon to horizon. The equipment consists of three cameras with wide-angle lenses, one pointing straight down and one obliquely to each side. By means of triangulation and ingenious translating devices, distortions resulting from the oblique angles are corrected in the final print. The trimetrogon method, by making it possible to space charting flights 25 miles apart instead of only four to six, has enormously accelerated mapping. Last fortnight its inventor, Lieut. Colonel Gerald ("Colonel Fitz") Fitzgerald, Chief of the Air Force...