L Bar Double Sided Monitoring Prism For SWISS TYPE Total Station Replace GMP104D 90 Degree L Type Topography Survey

Specification:

Item:GMP104D Prism

Offset: +9.4mm for SWISS   -25mm for other

Double-sided prism 1 inch ( Dia. 25.4mm) mini prism for total stations

L BAR prisms, maybe mounted on the tunnels ,roads and bridges ,dams,

buildings and constructions or some other fix up places or objects for

surveying ,distortion, displacement It suits different kinds of totals stations.