DR-48 Data Recorder Interfaces with Nikon Total Stations, Topcon GTS-300 and Sokkia SET Total Station. It has basic survey calculation capabilties and stores both Raw data and Co-ordinate values. It has softkey trig functions with approximately 19,000 point storage. Includes easy to use NS-6 Data Transfer and conversion Software Specifications Data Collector HP48 GX Points capability 19,000 Capabilities Traverse Topography Layout Cogo