{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"ProjectedCRS","name":"OSGB36 / British National Grid","base_crs":{"type":"GeographicCRS","name":"OSGB36","datum":{"type":"GeodeticReferenceFrame","name":"Ordnance Survey of Great Britain 1936","ellipsoid":{"name":"Airy 1830","semi_major_axis":6377563.396,"inverse_flattening":299.3249646}},"coordinate_system":{"subtype":"ellipsoidal","axis":[{"name":"Geodetic latitude","abbreviation":"Lat","direction":"north","unit":"degree"},{"name":"Geodetic longitude","abbreviation":"Lon","direction":"east","unit":"degree"}]},"id":{"authority":"EPSG","code":4277}},"conversion":{"name":"British National Grid","method":{"name":"Transverse Mercator","id":{"authority":"EPSG","code":9807}},"parameters":[{"name":"Latitude of natural origin","value":49,"unit":"degree","id":{"authority":"EPSG","code":8801}},{"name":"Longitude of natural origin","value":-2,"unit":"degree","id":{"authority":"EPSG","code":8802}},{"name":"Scale factor at natural origin","value":0.9996012717,"unit":"unity","id":{"authority":"EPSG","code":8805}},{"name":"False easting","value":400000,"unit":"metre","id":{"authority":"EPSG","code":8806}},{"name":"False northing","value":-100000,"unit":"metre","id":{"authority":"EPSG","code":8807}}]},"coordinate_system":{"subtype":"Cartesian","axis":[{"name":"Easting","abbreviation":"E","direction":"east","unit":"metre"},{"name":"Northing","abbreviation":"N","direction":"north","unit":"metre"}]},"scope":"Engineering survey, topographic mapping.","area":"United Kingdom (UK) - offshore to boundary of UKCS within 49°45'N to 61°N and 9°W to 2°E; onshore Great Britain (England, Wales and Scotland). Isle of Man onshore.","bbox":{"south_latitude":49.75,"west_longitude":-9.01,"north_latitude":61.01,"east_longitude":2.01},"id":{"authority":"EPSG","code":27700}}