Characteristics of the IGN 1:50,000 Map assembly chart
The IGN map of France at a scale of 1:50,000 is made up of 1095 sheets
Each sheet is numbered using two numbers: the first representing the corresponding column and the second the corresponding row (for example, the Noyers sheet is sheet 28-21 or XXVIII-21)
Each sheet is named by the name of the most important city.
Choosing a selection results in a full page refresh.