Metrication of RSO grid.
Adopts metric conversion of 0.914398 metres per yard exactly. This is a truncation of the Sears 1922 ratio.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Kertau (RSO)", "ellipsoid": { "name": "Everest 1830 (RSO 1969)", "semi_major_axis": 6377295.664, "inverse_flattening": 300.8017 }, "scope": "Metrication of RSO grid.", "area": "Malaysia - West Malaysia; Singapore.", "bbox": { "south_latitude": 1.13, "west_longitude": 99.59, "north_latitude": 6.72, "east_longitude": 104.6 }, "id": { "authority": "EPSG", "code": 6751 } }