Checking Power Lines via garmin GPSMAP 60C
The Chicago Tribune has an article about power company employees using Garmin GPSMAP 60c devices to navigate their way around while checking power lines.
The model used by ComEd, called the GPSMAP 60C, retails for about $430 and features a 2.6-inch color screen and 56 megabytes of internal memory to store maps and locations. And like other, more affordable units, the GPSMAP 60C uses points-of-interest (POI) data to indicate the location of hotels, restaurants, gas stations and other establishments.
The GPS units are loaded with 668,000 custom POIs relating to the electrical network.