Source: EPSG:9944 — EBBWV14 Grid + ODN height
compound horizontal + vertical reference system · Area of use: UK - Newport to Ebbw Vale
+proj=tmerc +lat_0=51.75 +lon_0=-3.1 +k=1 +x_0=106702.326 +y_0=119968.1395 +ellps=GRS80 +units=m +geoidgrids=uk_os_OSGM15_GB.tif +geoid_crs=WGS84 +vunits=m +no_defs +type=crsMore about EPSG:9944 →