EPSG_3800: "+proj=tmerc +lat_0=0 +lon_0=-120 +k=0.9999 +x_0=0 +y_0=0 +ellps=clrk66 +nadgrids=NTv2_0.gsb +units=m +no_defs +type=crs" = '+proj=tmerc +lat_0=0 +lon_0=-120 +k=0.9999 +x_0=0 +y_0=0 +ellps=clrk66 +nadgrids=NTv2_0.gsb +units=m +no_defs +type=crs'
NAD27 / Alberta 3TM ref merid 120 W
metre260,-120,52.88,-118.5