Need to convert NAD27 lat/lon to WGS84 UTM? ExpertGPS does it automatically. Enter coordinates in any format, in any datum. To convert Garmin StreetPilot c580 coordinates to any other format, just select that format in ExpertGPS. All of your data is automatically reprojected to the new format and datum.
ExpertGPS Pro lets you work with data in any US State Plane Coordinate System (SPCS). Even though your Garmin StreetPilot c580 doesn't natively support SPCS, you can use ExpertGPS Pro to convert data back and forth between state plane coordinates, lat/lon, and UTM.
Like the rest of the StreetPilot series, the Garmin StreetPilot c580 won't take up much room in your car. Measuring 4.4 inches wide by 3.2 inches high by 2.2 inches deep and weighing 9.0 ounces, it's easily transportable for multiple vehicle use and comes with an easy-to-install windshield mount. Garmin also keeps things simple, with minimal controls. There's a volume dial, a USB port, and a power button on the right. We especially like the external volume control since you don't have to fiddle with the menus to change this setting; we did notice, however, that it's a bit sensitive and jumps several volume levels if you're not careful. On the left side, you'll find an SD expansion slot and an external antenna port, while the power connector and the mic-in and audio-out ports are located on the back.