EPSG
EPSG guidance note #7-2, http://www.epsg.org
2019-09-17
Used only for depiction of graticule (latitude/longitude) coordinates on a computer display. The axes units are decimal degrees and of variable scale. The origin is at Lat = 0, Long = 0. See Equidistant Cylindrical, code 1029, for proper Plate Carrée.