I have recently come across an aerial survey manual first published in 1941! The book covers the theory of aerial survey and also has a good look at industry standard equipment for the time. What really caught my eye was the Fairchild T-3A 5 camera oblique camera system. The T-3A was used by the military and was flying in the 1940’s. Some 70 years later our digital 5 camera oblique camera shares an almost similar design. Just goes to show everything old is new again!
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