Geodetic triangulation of Spain: State in 1st of Setbre. 1866. Scale also expressed in 150 kilometers [= cm] and 30 leagues of 20,000 Spanish feet [= cm]. Coordinates referring to the Meridian of Madrid (or 6 ° 55 '-E 8 ° 40'/n 45 ° 50 '-No. 00'). Geographic network of 1st in 1st Table of conventional signs to indicate the triangles measured in Portugal, in the French chain of the Pyrenees, and in the extension of the Dunkerque meridian, the vertices in which the final station has been made, vertices, vertices prepared for observation and provincial capitals whose position has been det
Geodetic triangulation of Spain: State in 1st of Setbre. 1866. Scale also expressed in 150 kilometers [= cm] and 30 leagues of 20,000 Spanish feet [= cm]. Coordinates referring to the Meridian of Madrid (or 6 ° 55 '-E 8 ° 40'/n 45 ° 50 '-No. 00'). Geographic network of 1st in 1st Table of conventional signs to indicate the triangles measured in Portugal, in the French chain of the Pyrenees, and in the extension of the Dunkerque meridian, the vertices in which the final station has been made, vertices, vertices prepared for observation and provincial capitals whose position has been determined astronomically or geodesically
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Photo credit: © EU/BT / Alamy / Afripics
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