GPS Tuner Atlas has the ability to import user created and custom maps. You can import topographical maps, hand drawn maps or any other map you have an image of. Right now GPS Tuner offers topo maps for Germany so for those of us in the US and elsewhere we can use the import function in the meantime. In this tutorial we will use a digital topo map from digital-topo-maps.com (DTM). First locate the area and zoom level that you want to use. In the I am zoomed all the way into an area of the Salt River just south of Saguaro Lake. Be sure to click the ‘MyTopo’ button on the map once you’ve located the area so you can see the topo map. Keep reading for the rest of the tutorial. More >