The UK's Largest Independent Survey & Safety Supplier

03300 245 125

BACK TO PRODUCTS
Leica GRZ4 360-Degree Prism

Leica GRZ4 360-Degree Prism

The Leica GRZ4 is a professional 360-degree reflector prism designed for automated robotic total stations. Featuring six joined corner-cube prisms, it provides continuous 360-degree tracking coverage, high centering precision of 2.0mm, and a robust rubber-capped housing for maximum site durability.

  • Continuous 360-Degree Coverage: Utilizes six specialised corner-cube arrangements to offer full omnidirectional tracking, eliminating the need to orient the prism toward the total station.
  • Rugged Protection Framework: Equipped with heavy-duty rubber guards on the top and bottom metal housing plates to shield the precision optics from accidental drops and impacts.
  • High Centering Repeatability: Delivers a reliable 3D centering accuracy of 2.0mm, ensuring professional-grade data integrity during automated robotic tracking.
  • Seamless Snap-On Assembly: Features the classic Leica stub mechanism at the base for fast, secure click-locking onto telescopic poles without threading or alignment issues.

ADD TO YOUR QUOTE

Enquire about hiring or buying this product. You’ll be contacted by one of our Sales Team.

  • Download Product User Guide (PDF)

Adding one of these to your enquiry?

PQS Telescopic Carbon Fibre Pole

PQS Telescopic Carbon Fibre Pole

Enquire
Leica GLS30 Telescopic Carbon Fibre Pole

Leica GLS30 Telescopic Carbon Fibre Pole

Enquire

FAQs

Leica GRZ4 360-Degree Prism
What is the prism constant for the Leica GRZ4?
The GRZ4 has a specific Leica prism constant of +23.1mm, which equates to an absolute value of -11.3mm if used with a non-Leica total station.
Leica GRZ4 360-Degree Prism
Can the GRZ4 be used for high-accuracy control line network observations?
While perfect for fast topo and setting out, 360-degree prisms have a slightly lower pointing accuracy of 2.0mm compared to standard single circular prisms.
Leica GRZ4 360-Degree Prism
Is this prism compatible with automated target recognition?
Yes, the GRZ4 is optimised for ATR, PowerSearch, and continuous lock-on tracking with all Leica robotic total stations.
Leica GRZ4 360-Degree Prism
What happens if the pole falls over with the GRZ4 attached?
The prism is built with rugged metal plates and integrated rubber bumpers at the top and bottom to absorb impact and protect the glass faces.
Leica GRZ4 360-Degree Prism
How does the total station distinguish this prism from other reflective surfaces?
Robotic total stations look for the specific geometry and high signal return of the corner-cubes, filtering out background reflections.
Leica GRZ4 360-Degree Prism
Can I attach a GNSS receiver on top of the GRZ4?
The standard GRZ4 does not have a top mount thread; for integrated smart-pole setups, the Leica GRZ122 model is recommended.
Leica GRZ4 360-Degree Prism
What is the maximum operating range for tracking?
In standard atmospheric conditions, a robotic total station can achieve a reliable lock and measurement to the GRZ4 up to 600 metres away.
Leica GRZ4 360-Degree Prism
Does it require a threaded adapter to mount to a pole?
No, it features a built-in Leica snap-on socket at the base that clicks directly onto the standard stub configuration of Leica poles.
Leica GRZ4 360-Degree Prism
Can this prism be used with other total station brands like Trimble or Topcon?
Yes, but you must manually configure the correct prism constant in that instrument’s settings to avoid scaling errors.
Leica GRZ4 360-Degree Prism
How should I clean the glass faces on site?
You should blow away loose grit first, then clean the faces using clean water or a dedicated optical spray and a clean microfibre cloth.