Sokkia 724780 style Double Right Angle Penta Prism

Model NO.： OS-D

Permits stepping off angles of 90 Degrees and 180 Degrees with a center lens which permits foresight viewing. 

Slot in handle accommodates plumb bob cord. 

Features a larger field of view, and larger foresight viewing glass. 

Complete with leather belt loop case. 

Measures 3 3/4" (95mm) top to bottom.