Originally Posted By: clearwater
Navigation system that works without batteries

"pans, zooms, and rotations are performed without image degradation"

http://blog.owareusa.com/2013/08/05/navigation-system-that-works-without-batteries/

...and weights hundreds tons just for the CONUS down to the typical gMaps 1:200 scale, doesn't show your position, requires weeks to flip to the page with your location, obsolete the day you bought it, hard to edit or annotate for more than a couple of times, needs a flashlight to work with in the dark, needs a compass to align with the terrain...