Geodesy.
Replaced by MGI in Austria and MGI 1901 in former Yugoslavia.
Definition: OGC Well Known Text 2 (2019)
DATUM["Militar-Geographische Institut (Ferro)", ELLIPSOID["Bessel 1841",6377397.155,299.1528128, LENGTHUNIT["metre",1]], ID["EPSG",6805]], PRIMEM["Ferro",-17.6666666666667, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8909]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Militar-Geographische Institut (Ferro)", "ellipsoid": { "name": "Bessel 1841", "semi_major_axis": 6377397.155, "inverse_flattening": 299.1528128 }, "prime_meridian": { "name": "Ferro", "longitude": -17.6666666666667 }, "scope": "Geodesy.", "area": "Austria. Bosnia and Herzegovina. Croatia - onshore. Kosovo. Montenegro - onshore. North Macedonia. Serbia. Slovenia - onshore.", "bbox": { "south_latitude": 40.85, "west_longitude": 9.53, "north_latitude": 49.02, "east_longitude": 23.04 }, "id": { "authority": "EPSG", "code": 6805 } }