The Leica GRZ101 360-Degree Mini Prism is a light-weight passive reflector for use with Robotic Total Stations. It provides efficient operation without the need for directing the reflector toward the instrument. It provides the greatest pointing accuracy of 1.5 millimeter due to its small size and this gives it a shorter ATR range than the standard size reflectors.
This reflector is consists of six corner-cube prisms joined together and its arrangement allows the measuring beam to reflect directly back to its source from any position on the prism set. The even distribution of the prism provides similar offset and accuracy readings from any side..