EPSG
Ordnance Survey of Great Britain.
2020-07-24
Geodesy, topographic mapping.
Orthometric heights.
United Kingdom (UK) - Great Britain - England - Isles of Scilly onshore.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalReferenceFrame", "name": "St. Marys", "scope": "Geodesy, topographic mapping.", "area": "United Kingdom (UK) - Great Britain - England - Isles of Scilly onshore.", "bbox": { "south_latitude": 49.86, "west_longitude": -6.41, "north_latitude": 49.99, "east_longitude": -6.23 }, "id": { "authority": "EPSG", "code": 5147 } }