Sokkia 724861 style 25 mm copper-coated prism system 

Model NO.: ADS102-A

System contains a copper coated 25mm prism, a tilting holder that has either a side-mounted or center vial. 

The prism can be either mounted in a 0 or -30mm offset position. 

Kit comes with two adapters,plumb bob holder and padded carrying case with a belt loop.