Topographic mapping.
Replaced Genova datum, Bessel 1841 ellipsoid, from 1940.
Italy - onshore and offshore; San Marino, Vatican City State.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Monte Mario (Rome)", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 }, "prime_meridian": { "name": "Rome", "longitude": 12.4523333333333 }, "scope": "Topographic mapping.", "area": "Italy - onshore and offshore; San Marino, Vatican City State.", "bbox": { "south_latitude": 34.76, "west_longitude": 5.93, "north_latitude": 47.1, "east_longitude": 18.99 }, "id": { "authority": "EPSG", "code": 6806 } }