The maps' accuracy and names of places decisively increase in the 17th century. An important stage in the production of map material was the foundation of the National Land Survey of Sweden in 1627. Finland also got its first surveyor in 1633. Around the time that the Land Survey of Sweden was founded its first director Andreas Bureus compiled a new map of Scandinavia, where Northern Europe and Finland had almost the right form. Bureus' map was copied as different versions and so it was its turn to serve as a model for map makers during the next 100 years. On Bureus' maps Central Finland slowly acquires the right dimensions and more recognisable place names are used.