I have a map of all South Africa and a little bit more. I am trying to georeference this map for some time, but I get big errors. I believe that the small scale is the problem (around 1:8 000 000). I tried to cut the map in 4, but still nothing... I never georeference maps with this scale. The maps doesn't have a grid, it has some coordinates on the sides, but I am not sure they are correct.
Do you have any suggestions?