Map sheets NGI, 1 : 100 000, classic series

Regular grid with chart sheet numbering corresponding to the analogue chart sheets of the classic Topographic Map series 1 : 100 000 from the National Geographical Institute, for the territory of the Flemish Region and the Brussels-Capital Region. One map sheet measures 32 km in x direction at 20 km in y direction; the origin of the grid is Lambert 72-coordinate (18995.83, 154004.17) and the grid is parallel to the Lambert 72-coordinate system.33 map sheets are needed to cover the Flemish and Brussels regions.