Well Known Text
 
WKT Version 2
PROJCRS["NAD27 / Montana South",BASEGEOGCRS["NAD27",DATUM["North American Datum 1927",ELLIPSOID["Clarke 1866",6378206.4,294.978698213901,LENGTHUNIT["metre",1,ID["EPSG",9001]],ID["EPSG",7008]],ID["EPSG",6267]],ID["EPSG",4267]],CONVERSION["Montana CS27 South zone",METHOD["Lambert Conic Conformal (2SP)",ID["EPSG",9802]],PARAMETER["Latitude of false origin",44,ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",8821]],PARAMETER["Longitude of false origin",-109.5,ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",8822]],PARAMETER["Latitude of 1st standard parallel",46.4000000000003,ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",8823]],PARAMETER["Latitude of 2nd standard parallel",44.866666666667,ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",8824]],PARAMETER["Easting at false origin",2000000,LENGTHUNIT["US survey foot",0.304800609601219,ID["EPSG",9003]],ID["EPSG",8826]],PARAMETER["Northing at false origin",0,LENGTHUNIT["US survey foot",0.304800609601219,ID["EPSG",9003]],ID["EPSG",8827]],ID["EPSG",12503]],CS[Cartesian,2,ID["EPSG",4497]],AXIS["Easting (X)",east],AXIS["Northing (Y)",north],LENGTHUNIT["US survey foot",0.304800609601219,ID["EPSG",9003]],ID["EPSG",32003]]