The RAC Geo II takes all the benefits of the RAC Plus III and adds an on-board GPS receiver and data memory. This allows for distance measuring without the need for an external sensor, and for data to be stored to the unit’s expansive memory for later download to a computer, creating an unparalleled combination of accuracy & convenience. This cost-effective unit saves time & money by allowing personnel to measure distance, accurate up to 1 foot per mile with an external sensor or 5 feet per mile with the GPS sensor, while recording GPS coordinates of roadway features – making it the most powerful DMI on the market.