Projection and latitude and longitude lines
This layer shows the lines that the mapmaker used to design the projection. This is an important backbone to the map as it shows how Vespucci planned the unusual polar projection and the lines would have provided him with guidelines for where different features are. The latitude and longitude lines also allow the viewer to orient themselves in regards to which part of the globe they are seeing. These lines are very obvious and visually striking, especially in the large spaces around the globe.
Vespucci World Map
Polar projection of the world
Juan Vespucci
1524