Description
The Leica GRZ4 360° Prism is a reflector suitable for all robotic TPS work performed with a survey pole.
Whilst the Leica GRZ4 has a typical 3D pointing accuracy of 5.0mm, a better one can be achieved by aiming on the yellow marker arrow. When manual pointing is used, the accuracy increases to 2.0mm.
The Leica GRZ4 has six joined corner cube prisms, allowing the measuring beam to reflect back to the source from all positions.
Specifications
| Model: | GRZ4 |
| Manufacturer: | Leica |
| MPN: | 639985 |
| Height Offset: | 86.0 mm |
| Absolute constant: | -11.30 mm |
| Leica constant: | +23.10 mm |
| Dimensions (W × H × D): | 93×93×145 mm |
| Centring accuracy: | ±5.0 mm |
| Mount: | 12mm (Leica) Spigot |
Notes:
In order to achieve the 2.0mm accuracy, the instrument crosshair has to be horizontally aligned with the yellow arrow marker on the target body.
Leica GRZ4 360° Prism FAQ
Below is a list of frequently asked questions about Leica GRZ4 360° Prism.
What is the prism constant for the Leica GRZ4 360° Prism?
The absolute prism constant for the Leica GRZ4 360° Prism is -11.3mm. The Leica constant is 23.1mm.
Can I use the Leica GRZ4 360° Prism with a Leica instrument?
Yes, just set the prism constant to 23.1mm.
What is the height offset of the Leica GRZ4 360° Prism?
The height offset is 86.0mm.
