Well Known Text
 
WKT Version 2
PROJCRS["Sister Islands National Grid 1961",BASEGEOGCRS["SIGD61",DATUM["Sister Islands Geodetic Datum 1961",ELLIPSOID["Clarke 1866",6378206.4,294.978698213901,LENGTHUNIT["metre",1,ID["EPSG",9001]],ID["EPSG",7008]],ID["EPSG",6726]],ID["EPSG",4726]],CONVERSION["Cayman Islands TM (ft)",METHOD["Transverse Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural origin",0,ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",8801]],PARAMETER["Longitude of natural origin",-81,ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",8802]],PARAMETER["Scale factor at natural origin",0.9996,SCALEUNIT["unity",1,ID["EPSG",9201]],ID["EPSG",8805]],PARAMETER["False easting",1640419.9475,LENGTHUNIT["foot",0.3048,ID["EPSG",9002]],ID["EPSG",8806]],PARAMETER["False northing",0,LENGTHUNIT["foot",0.3048,ID["EPSG",9002]],ID["EPSG",8807]],ID["EPSG",6127]],CS[Cartesian,2,ID["EPSG",1039]],AXIS["Easting (E)",east],AXIS["Northing (N)",north],LENGTHUNIT["foot",0.3048,ID["EPSG",9002]],ID["EPSG",6129]]


