Antifog Prism (5",silver-coated)

Model: GPR112-NGE-5S-W-AG-AF
Product Overview
The GPR112-NGE-5S-W-AG-AF is a high-precision surveying prism engineered for demanding field conditions.
It delivers ≤5″ optical accuracy and up to 2000 m range, combining water-proof, silver-coated and antifog protection with a high-visibility neon green canister. Its durable PC housing, precision K9 glass and dual-

thread mounting ensure broad compatibility with industry-standard surveying instruments.

1.Optical Accuracy
1)Prism Accuracy
≤5″ arc-seconds, verified by a real-time Zygo interferometer test report included with each unit. This
ensures superior angle measurement reliability.

2)Glass Material
Precision-ground optical K9 glass, providing excellent light transmission and minimal distortion.

3)Measuring Range
Up to 2000 m under normal weather conditions, supporting long-distance operations.

4)Prism Offset
Fixed at either 0 mm or –30 mm, contingent on the specific prism holder used, allowing for flexible
application setups.

2.Physical Specifications
1)Prism Aperture
62 mm (2.44 in), offering a large effective reflective area for robust signal return.

2)Housing Material
High-grade Polycarbonate (PC), engineered for color-fastness and heat resistance, ensuring structural
integrity and long-term appearance under solar exposure.

3)Housing Color
Pantone 802C neon green (NGE) maximizes daytime conspicuity against low-contrast worksite backgrounds, reducing the risk of prism loss and improving survey crew efficiency.

3.Environmental Durability
1)Water-proof (W)
Sealed optical construction prevents moisture ingress, ensuring clear vision and durable performance in
humid or wet environments.

2)Silver-coated (AG)
Silver coating provides a larger acceptance angle and higher reflectance,enabling easier alignment and
reliable signal return in surveying applications.

3)Antifog-coated (AF)
Advanced hydrophilic antifog coating eliminates condensation, maintaining optical clarity during rapid temperature shifts and high-humidity exposure.

4)Accessories
Includes a white dust-proof cover (optional) and a desiccant agent for additional protection during storage
and transport.

4.Mounting Compatibility
1)Dual Thread System
a)M8 Internal Stainless Steel (SS) Thread
Designed for Geomaster mounting sets (GHT112-8/ALU or GHT112-8/BLK).

b)M20 External Stainless Steel (SS) Thread
Compatible with most standard prism holders, specifically the GHT112 series with M20 thread, and
Geomaster sets (GHT112-20/ALU or GHT112-20/BLK).

2)Universal Compatibility
Fully interoperable with top-brand surveying instruments, ensuring seamless field integration.
Note: Any updates are subject to change without prior notice.Prism Cluster,Cluster Prism(GPR113)

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