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Home > Prisms and Targets > Leica GRZ4 360 degree Prism

Leica GRZ4 360 degree Prism

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Item #:
  • Description
  • Specifications
  • Why use a 360 prism?
Leica GRZ4, 360° Reflector
This reflector is recommended for all robotic work performed with a survey pole. The rubber mountings on the top and bottom of the prisms provide protection of the glass if the pole falls over. The reflector is supplied in a padded case for safe transportation.

The GRZ4 has an overall pointing accuracy of 5mm (<1/4"). However, when aiming directly at one of the three prisms, indicated by yellow arrows, an accuracy of better than 2mm (<1/8") can be achieved.

Order No: 639985
Catalog ID 639985
Manufacturer ID 639985
Manufacturer Leica Geosystems
Product Line No
Shape Leica-style omnidirectional 360
Diameter No
Dimensions Triangular 47 mm x 6
Type Copper coated
Onboard Circular Bubble No
Centering Accuracy (mm) 2.0
Holder/Assembly 360 Robotic
Constant/Offset +23.1 mm
Holder Height 78 mm
Tilt No
Target Material No
Holder Material Rubber
Connector Leica/Wild Stub
Available Target Color(s) No
Available Holder Color(s) Black
Accessories Padded Case
Range 2000 ft (600 m) ATR
Leica 360-Degree Prisms

Leica GRZ122 360 Degree prism Total stations that use automated target recognition and lock technology are best paired with an omni-directional prism. This type of prism is more convenient for operators because they do not have to constantly align the prism to the instrument.

In principal, the 360 prism has the same functionality as a round prism reflecting the incoming EDM signal towards the instruments EDM receiver optics. However, instead of a single triple-prism glass assembly, the 360 prism consists of six tightly assembled triple-prism glass bodies. Each body is comparable to a single round prism but with smaller dimensions and with only slightly ground corners. This type of prism provides a continuous and permanent reflection of the EDM signal.

360-degree prisms are relatively large and heavy. However, these prisms are useful when working with robotics, when the operator at the pole is moving around relatively quickly and needs to concentrate on the points being measured rather than permanently aligning the prism to the instrument.

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