downloadable maps

The GPS Handbook, Revised and Updated Edition: A Guide for the Outdoors (GPS Handbook: A Guide for the Outdoors)

Robert I. Egbert & Joseph E. King
Cover of The GPS Handbook, Revised and Updated Edition: A Guide for the Outdoors (GPS Handbook: A Guide for the Outdoors)
Updated with information on the latest models of GPS and new technology such as sophisticated downloadable maps, this new edition provides all the information needed to work any GPS unit in the outdoors.