The Dist-O-Map(r) provides 11,000 city-to-city mileages for the United States. Simply turn the dial to the city nearest a starting point and mileages to dozens of other destinations appear in the windows. This is a quick-and-easy reference for the busy trucker, those on a long-distance road trip, or backseat fun for the just-plain-curious. Also includes six regional maps for local travel and an U.S. overview map for national travel.