{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"ProjectedCRS","name":"Hong Kong 1963 Grid System","base_crs":{"type":"GeographicCRS","name":"Hong Kong 1963","datum":{"type":"GeodeticReferenceFrame","name":"Hong Kong 1963","ellipsoid":{"name":"Clarke 1858","semi_major_axis":{"value":20926348,"unit":{"type":"LinearUnit","name":"Clarke's foot","conversion_factor":0.3047972654}},"semi_minor_axis":{"value":20855233,"unit":{"type":"LinearUnit","name":"Clarke's foot","conversion_factor":0.3047972654}}}},"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":4738},"remarks":"Replaced by Hong Kong 1963(67) (CRS code 4839) for military purposes only. For all purposes, replaced by Hong Kong 1980 (CRS code 4611)."},"conversion":{"name":"Hong Kong 1963 Grid","method":{"name":"Cassini-Soldner","id":{"authority":"EPSG","code":9806}},"parameters":[{"name":"Latitude of natural origin","value":22.3121333333333,"unit":"degree","id":{"authority":"EPSG","code":8801}},{"name":"Longitude of natural origin","value":114.178555555556,"unit":"degree","id":{"authority":"EPSG","code":8802}},{"name":"False easting","value":132033.92,"unit":{"type":"LinearUnit","name":"Clarke's foot","conversion_factor":0.3047972654},"id":{"authority":"EPSG","code":8806}},{"name":"False northing","value":62565.96,"unit":{"type":"LinearUnit","name":"Clarke's foot","conversion_factor":0.3047972654},"id":{"authority":"EPSG","code":8807}}]},"coordinate_system":{"subtype":"Cartesian","axis":[{"name":"Northing","abbreviation":"N","direction":"north","unit":"metre"},{"name":"Easting","abbreviation":"E","direction":"east","unit":"metre"}]},"scope":"Cadastre, engineering survey, topographic mapping (large scale).","area":"Hong Kong - onshore and offshore.","bbox":{"south_latitude":22.13,"west_longitude":113.76,"north_latitude":22.58,"east_longitude":114.51},"id":{"authority":"EPSG","code":3366}}