this instrument is Brand New, factory-sealed The Builder has 170 m Reflectorless EDM with visible laser allowing one-man operation without a prism or hard to reach places. The Builder R100Mpower contains an RS232 port enabling it to communicate with most data collectors sold today. The Builder comes with multiple languages onboard giving improved efficiency and convenience. Direct DXF functionality allows data to be stored in DXF format and easily uploaded to AutoCAD. Internal memory allows the user to store up to 10,000 points. Prism offsets of any kind can be set in the instrument to work with most prisms on the market. The Builder R100Mpower is a robust, reliable, and exceptionally easy to use total station.