Source: EPSG:9427 — ETRS89 + Lerwick height
compound horizontal + vertical reference system · Area of use: UK - Shetland Islands onshore
+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +geoidgrids=uk_os_OSGM15_GB.tif +geoid_crs=WGS84 +vunits=m +no_defs +type=crsMore about EPSG:9427 →