GMP111 Survey Mini Prism

Place of Origin China
Brand Name Leica
Model Number GMP111-17.5
Minimum Order Quantity 5 Sets
Price 40USD~55USD
Packaging Details Box and Carton
Delivery Time 3-5 work day
Payment Terms T/T
Supply Ability 500sets per month
Product Details
Prism Constant +17.5mm Centering Accuracy 2.0mm
Range 2000m (IR) Poles 4 Sections
Holder Red Polymer Brand Original Leica
Condition New Color Red
Material Aluminium Alloy Catagory Total Station Accessories
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GMP111 Survey Mini Prism


17.5mm Survey Mini Prism


17.5mm prism reflector in total station

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Product Description

Leica GMP111 Mini Survey Prism Set (+17.5mm) With Holder and Aluminum Poles


Model: GMP111-17.5


Package Includes:

• Prism (+17.5mm constant)
• 4x Poles (screw-on aluminium, permitting five prism heights - 10, 40, 70, 100 & 130cm)
• 1x Spike


Specifications and Features:

Prism Constant: +17.5mm

Centering Accuracy: 2.0mm

Range: 2000m (IR)


Conveniently storable in the instrument container, the GMP111-17.5 offers high positional accuracy due to its small size.


The GMP111 has a built-in levelling bubble and is supplied with an attachable spike (1/4" thread). With this arrangement a point can be measured with very high precision.


This mini prism set includes 4 screw-on aluminum rods with 1/4" threads permitting five different prism heights, up to 50". Holder and housing are made of red polymer, fiber-reinforced.



Optical Survey Prism Applications

Surveying reflector prisms are used by surveyors and engineers to measure the change in position of a target that is assumed to be moving. Survey prisms are used for a wide range of monitoring applications including:

  • Rail Monitoring
  • Settlement Monitoring
  • Displacement Monitoring
  • Deformation Monitoring
  • Convergence Monitoring


Prism Range
Surveying Prisms, also known as retro-reflectors, redirect a measuring beam back to the EDM (Electronic Distance Measurement) for processing distance. There are two main factors for good range measurement: prism diameter and beam deviation. If the beam deviation is not accurate then the returned beam will miss the EDM completely. This occurs mainly near the maximum range of the EDM.


Prism Holder Accuracy
Prism accuracy is determined by the physical location of the prism in its canister and then to the prism holder.


GMP111 Survey Mini Prism 0


GMP111 Survey Mini Prism 1