Universal Transverse Mercator Grid, International Spheroid Zone 30. Relief shown by 10 m contour interval and spot heights. This set is coordinated with the following: Belgium & N.E. France 1:100,000 (G.S.G.S. 4336) Central Europe 1:100,000 (G.S.G.S. 4416) and Italy 1:100,000 (G.S.G.S. 4164). Purple numbered Grid is Lambert Zone I This map is part of a set of 136 sheets, some sheets were reissued by U.S. Army Map Service (A.M.S. M661). Largely based, directly or through reduction, on France 1:50,000 (G.S.G.S. 4250).