EPSG
Ordnance Survey of Great Britain.
2020-07-24
Geodesy, topographic mapping.
Orthometric heights.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalReferenceFrame", "name": "Ordnance Datum Newlyn", "scope": "Geodesy, topographic mapping.", "area": "United Kingdom (UK) - Great Britain onshore - England and Wales - mainland; Scotland - mainland and Inner Hebrides.", "bbox": { "south_latitude": 49.93, "west_longitude": -7.06, "north_latitude": 58.71, "east_longitude": 1.8 }, "id": { "authority": "EPSG", "code": 5101 } }