5pcs 90-degree monitoring prism GMP104, 1 inch L-bar reflector, suitable for total station L-bar prism

Product Description :

90 degree L type prism

Fits for Leica total station and replace GMP104L
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 total
stations.