Giới Thiệu · USAPhotoMaps
USAPhotoMaps downloads USGS aerial photo and topo map data from Microsoft's free TerraServer Web site, saves it on your hard drive, and creates GPS-accurate maps from it.
You can: Scroll and zoom, See latitude/longitude, USGS Landmarks, Tiger/Line streets, elevation and contour lines, Add waypoints, routes, and text, See photos associated with waypoints, Go to any address, populated place, USGS landmark, or lat/lon in the U.S.A., and transmit, receive, and show APRS data.
