The Global Map is a neat toy from the 1940s. The whole thing is just under one by two feet in area, and consists of two rotating hemispheres that touch at a single point, with the purpose of showing the shortest distance by air or sea between two points—a quick and dirty way of showing a great-circle route with a bit of cardboard and no math. From the David Rumsey Map Collection. [Maps on the Web]
You must be logged in to post a comment.