Windows CE 6.0 Operating System Reflectorless 600m/800m Color Touch Screen Bluetooth, RS232, Mini USB, USB, and SD Card Angle Accuracy: 2″ The new 952R Windows CE Total Station comes equipped with powerful tools that will insure you get the job done. The two touch screen displays give you a clear, colorful, and user friendly interface, that will guide you through its functionalities. In addition to the common basic measuring modes and special measuring programs (remote elevation measurement, offset measurement, missing line measurement, distance layout, coordinate layout, resection and area measurement), the road measuring prog resection and area measurement), the road measuring program is preinstalled, significantly facilitating control survey, topographic survey and engineering lofting