The Geomax GRZ122 360-Degree Prism is a lightweight passive reflector for use with Robotic Total Stations. It has six corner-cube prisms that are joined together and are arranged in a way that measuring beams reflect directly back to its source, no matter the position. This will save you time and effort as you no longer need to adjust the prism when you move your TPS. The GRZ prism is protected by rubber mountings on the top and bottom, making sure it can withstand the rigors of the field.
This reflector has an overall 3D pointing accuracy of 0.07 inches (2 mm), a working range of 2,000 ft (600 m), and a prism constant of 0.9 inches (23.1 mm). The GRZ122 model includes a built-in point that allows it to be positioned directly on a survey mark at a height of 3.1 inches (78 mm) and a 5/8-inch thread adapter for mounting a GPS antenna.