Used when the first indicator contains the value 1. If the name is Mercator, the scale factor at equator (a multiplier for reducing a distance obtained from a map to the actual distance along the equator); if the name is Oblique Mercator, the scale factor at center line (a multiplier for reducing a distance obtained from a map to the actual distance along the center line); if the name is Transverse Mercator, the scale factor at central meridian (a multiplier for reducing a distance obtained from a map to the actual distance along the central meridian); if the name is Polar stereographic, the scale factor at the projection origin (a multiplier for reducing a distance obtained from a map to the actual distance at the projection origin). Horizontal coordinate system. Geodetic model.
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