This is a two-sided map. The World on one side and the US on the other. It is clearly the least expensive way to get two map in one! The map and spring roller are made with quality German engineering for years of classroom use. The scale on the World map is 1 to 22 million. The USA map is 1:4.5 million. Compare this map to Nystrom's Political Map series part# 1NP99, It is the same price and you get two maps. See the USA side.