{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"ProjectedCRS","name":"Kertau 1968 / Perak Revised Grid","base_crs":{"type":"GeographicCRS","name":"Kertau 1968","datum":{"type":"GeodeticReferenceFrame","name":"Kertau 1968","ellipsoid":{"name":"Everest 1830 Modified","semi_major_axis":6377304.063,"inverse_flattening":300.8017}},"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":4245},"remarks":"Not used for metrication of RSO grid - see Kertau (RSO) (CRS code 4751). Replaced by GDM2000 (CRS code 4742)."},"conversion":{"name":"Perak Revised Cassini Grid","method":{"name":"Cassini-Soldner","id":{"authority":"EPSG","code":9806}},"parameters":[{"name":"Latitude of natural origin","value":4.85938055555556,"unit":"degree","id":{"authority":"EPSG","code":8801}},{"name":"Longitude of natural origin","value":100.816766666667,"unit":"degree","id":{"authority":"EPSG","code":8802}},{"name":"False easting","value":0,"unit":"metre","id":{"authority":"EPSG","code":8806}},{"name":"False northing","value":133453.669,"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":"Cadastre.","area":"Malaysia - West Malaysia - Perak.","bbox":{"south_latitude":3.66,"west_longitude":100.07,"north_latitude":5.92,"east_longitude":102},"id":{"authority":"EPSG","code":4397}}