Zeiss Radial Triangulator Instructions for Use 1930

SKU BR5716/Zeiss Radial Triangulator Manual
Very Good Condition. 8 pages, Bms 13 engl. Carl Zeiss Jena 1930.

The radial triangulator is an instrument for measuring the polar co-ordinates of points, and serves specially to measure directions in triangulation by means of air-photographs.

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