GSGS series 4228. First Edition. Italian Istituto Geografico Militare map dated 1935 and photolithographed by the British Ordnance Survey in 1943. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. North Italy Grid.
Italian map dated 1936 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 15 degrees (Meridianstreifen 15 degrees). Latitude/longitude coordinates are based on the prime meridian at Rome (Monte Mario). Contour intervals (Hohenlinien) are 10m.
Fourth Edition. Italian map dated 1927 reprinted in German in 1936. "1 degree, 45 minutes, East of Rome (Monte Mario) = 12 degrees, 50 minutes, East of Greenwich.
GSGS series 4228. First Edition. Italian Istituto Geografico Militare map dated 1933 and photolithographed by the British Ordnance Survey in 1943. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. North Italy Grid.
GSGS series 4228. First Edition. Italian Istituto Geografico Militare map dated 1911 and photolithographed by the British Ordnance Survey in 1943. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. Contours at 5 metres (V.I.). North Italy Grid.
GSGS series 4228. Second Edition (coloured). Italian Istituto Geografico Militare map dated 1936 and photolithographed by the British Ordnance Survey in 1943. Information shown in black is taken from smaller scale material and its position is approximate. This sheet shows revision to principal communications up to 1939 from smaller scale maps. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. Contours at 25 metres (V.I.). South Italy Grid (Blue).
Provisional GSGS series 4228. First Edition-AMS 1. Copied from an Italian map dated 1941 with principal communications revised to 1943 using air photographs. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. Contours at 25 metres interval. South Italy Grid "Blue".
GSGS Series 4228. First Edition. Italian Istituto Geografico Militare map dated 1925 and photolithographed by the British Ordnance Survey in 1941. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. North Italy Grid
GSGS series 4228. Second Edition (Coloured)-AMS 2. Copied from an Italian Istituto Geografico Militare map dated 1925 with principal communications revised to 1940 using air photos. Produced by the U.S. Army Map Service but photolithographed by the British Ordnance Survey in 1943. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. Contours at 10 metres interval. South Italy Grid "Blue".
GSGS series 4228. Second Edition (Coloured)-AMS 2. Italian Istituto Geografico Militare map dated 1931 and photolithographed by the British Ordnance Survey in 1942. Principal communications revised to 1942 using air photos and reproduced by the U.S. Army Map Service in 1943. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. Contours at 25 metres (V.I.). South Italy Grid "Blue".
GSGS series 4228. Second Edition. Italian Istituto Geografico Militare map, photolithographed by the British Ordnance Survey in 1942. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. Contours at 25 metres interval. South Italy Grid "Blue".
GSGS series 4228. First Edition. Italian Istituto Geografico Militare map dated 1933 and photolithographed by the British Ordnance Survey in 1943. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. Contours at 5 metres (V.I.). North Italy Grid.
GSGS series 4228. Second Edition (Coloured)-AMS 1. Copied from an Italian Istituto Geografico Militare map dated 1934 with principal communications revised to 1940 using air photos. Produced by the U.S. Army Map Service but photolithographed by the British Ordnance Survey in 1943. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. Contours at 10 metres interval. South Italy Grid "Blue".
Fourth Edition. Italian map dated 1892 reprinted in German in 1934. "0 degrees, 30 minutes, West of Rome (Monte Mario) = 12 degrees, 27 minutes, 12 seconds East of Greenwich.
GSGS series 4228. First Edition. Italian Istituto Geografico Militare map dated 1935 and photolithographed by the British Ordnance Survey in 1943. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. Contours at 5 metres (V.I.). North Italy Grid.
GSGS series 4228. First Edition. Italian Istituto Geografico Militare map dated 1932 and photolithographed by the British Ordnance Survey in 1943. The meridians are based on the meridian of Rome, which is 12 degrees, 27 minutes and 7.1 seconds east of Greenwich. Contours at 25 metres (V.I.). North Italy Grid.
