Mini Prism Set (GMP004,copper-coated)

Specifications & Features
Model: GMP004-381-5S-W-CU
The Geomaster Mini Prism Set (GMP004) is a precision field-ready surveying accessory featuring a
38.1mm copper-coated prism, polymer yoke, and quick-release base—engineered for accurate,
durable performance in demanding field conditions.

1. Prism Aperture
38.1mm (1.5 inch), optimizing signal return and targeting efficiency.

2. Prism Constant
-18.9 mm (Leica: 15.5 mm)

3. Prism Accuracy
≤5" (arc second), ensuring reliable, high-precision distance measurement.

4. Zygo Inspection Report
Each prism is supplied with this report, ensuring verified accuracy with full traceability.

5. Measuring Range
Up to 2000m under good weather conditions.

6. Copper-coated (CU)
Precision copper coating on the prism's reverse surface seals against moisture and condensation,
preserving EDM range and extending service life in demanding field conditions.

7. Housing Construction
1) Dust-proof, moisture-proof, and water-proof for rough and demanding environments.
2) Polymer yoke holder and quick-release base, with highly visible yellow (YEL) holder and base for
easy identification.

8. Central Height & Dimensions
Central height 98mm; polymer yoke frame 131mm high × 88mm wide.

9. Mounting
Includes stick-on or screw-on mounting flange (trumpet support) with Swiss-style quick-release stub,
12mm (Dia) × 40mm × 60mm (Dia), plus a 20mm locking knob securing the retro holder and flange.

10. Compatibility
1) Works with all Geomaster Prism Poles featuring 5/8" male thread or Swiss-style male stub.
2) Fits all Geomaster Convergence Bolts featuring 5/8" male thread or Swiss-style male stub.

Note: Any updates would be subject to change without prior notice.
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