Exhibitions of Gnomonic Projection on “Plane tangent at a Horizon.” Flamsteed’s Projection, Mercator’s Projection & Polyconic Projection. From U.S. Coast and Geodetic Survey Report of 1880, Plate 5.
Photo Category: Coast and Geodetic Survey - Archive
Photo Date: 1880
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| Added On | 20th October 2015 | 
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