BOUNDCRS[SOURCECRS[PROJCRS["ETRS89 / GK21FIN",BASEGEOGCRS["ETRS89",ENSEMBLE["European Terrestrial Reference System 1989 ensemble",MEMBER["European Terrestrial Reference Frame 1989"],MEMBER["European Terrestrial Reference Frame 1990"],MEMBER["European Terrestrial Reference Frame 1991"],MEMBER["European Terrestrial Reference Frame 1992"],MEMBER["European Terrestrial Reference Frame 1993"],MEMBER["European Terrestrial Reference Frame 1994"],MEMBER["European Terrestrial Reference Frame 1996"],MEMBER["European Terrestrial Reference Frame 1997"],MEMBER["European Terrestrial Reference Frame 2000"],MEMBER["European Terrestrial Reference Frame 2005"],MEMBER["European Terrestrial Reference Frame 2014"],ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1]],ENSEMBLEACCURACY[0.1]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4258]],CONVERSION["Finland Gauss-Kruger zone 21",METHOD["Transverse Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude of natural origin",21,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale factor at natural origin",1,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False easting",21500000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False northing",0,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["northing (N)",north,ORDER[1],LENGTHUNIT["metre",1]],AXIS["easting (E)",east,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["Cadastre, engineering survey, topographic mapping (large scale)."],AREA["Finland - nominally onshore between 20°30'E and 21°30'E but may be used in adjacent areas if a municipality chooses to use one zone over its whole extent."],BBOX[59.84,20.5,69.33,21.5]],ID["EPSG",3875]]],TARGETCRS[GEOGCRS["MRH21-IRF",DATUM["MRH21 Intermediate Reference Frame",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic latitude (Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic longitude (Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],USAGE[SCOPE["Engineering survey and topographic mapping for railway applications."],AREA["United Kingdom (UK) - on or related to Midland Rail Hub, covering routes through Cardiff, Bristol, Gloucester, Derby, Birmingham, Leicester, and Lincoln."],BBOX[51.35,-3.27,53.26,-0.36]],ID["EPSG",9866]]],ABRIDGEDTRANSFORMATION["ETRS89 to MRH21-IRF (1)",METHOD["NTv2",ID["EPSG",9615]],PARAMETERFILE["Latitude and longitude difference file","TN15-ETRS89-to-MRH21-IRF.gsb"],USAGE[SCOPE["Engineering survey and topographic mapping for railway applications."],AREA["United Kingdom (UK) - on or related to Midland Rail Hub, covering routes through Cardiff, Bristol, Gloucester, Derby, Birmingham, Leicester, and Lincoln."],BBOX[51.35,-3.27,53.26,-0.36]],ID["EPSG",9867],REMARK["In conjunction with MRH21-TM map projection (code 9868) applied to MRH21-IRF (code 9866), emulates the MRH21 Snake projection. Applied to ETRS89 (as realized through the OSNet v2009) defines MRH21-IRF hence is errorless.						"]]]