Italian map dated 1931 reprinted in German in 1943 with purple German grid superimposed. Grid lines (purple) follow the Deutsche Heeresgitter (DHG), or German Army Grid System. Easting (Rechts) and Northing (Hoch) coordinates are measured in metres, based on a central meridian of 9 degrees (Meridianstreifen 9 degrees). Latitude/longitude coordinates are based on the prime meridian at Rome (Monte Mario). Contour intervals (Hohenlinien) are 10m.
