total station 1.Easy to operate with soft keys 2.Large data memory with 16,000 points 3.Large quantity batteries Models DTM312A, DTM312B, DTM315A, DTM315B, DTM322A, DTM322B, DTM325A, DTM325B suits the measurement with target and prism.SPECIFICATION: ModelDTM312A,DTM312BDTM315A,DTM315BDTM322A,DTM322BDTM325A,DTM325BTelescope Length150mmMagnification30XImageErectShortest sighting dictance1. ...