I want a projection of Earth where distances are undistorted. i.e. 10 degrees of latitude at the equator is exactly the same map distance as 10 degrees of latitude at the Arctic Circle. As a disqualified example, the Mercator Projection has map distance increasing with increasing latitude. I don't care how this distorts the landmasses and oceans, I simply need something with equal gridmarks that can be used in a software program. Does this type of projection have a name? I'm going to go looking for world maps in this format.