Cartographic grids of Biscay

• Compellingly benchmark distributed

  Cartographic grids used by the Provincial Council of Biscay. Two types of grids are distinguished: 1. Grids according to the cut of the National Topographic Map for scales: 1:50,000 and 5,000 (called 50000 and 5000 IGN respectively); 2. 10km, 2.5km and 0.25km UTM grids (called 10000, 5000 and 500 DFB, respectively).