GRS 80 definition
GRS 80 means the geodetic reference system of 1980 as adopted in 1979 by the international union of geod- esy and geophysics defined on an equipotential ellipsoid;
Examples of GRS 80 in a sentence
Mercator projection, GRS 80, State Plane Coordinate System, North American Datum 1983, ▇▇▇▇▇▇▇ Zones 1 through 6 (or appropriate zone for region to be mapped), feet.