Precision reflective optical glass lens designed for reliable longrange surveying and engineering measurements. Key benefits Accurate measurements to 800 meters: Precision cut optical glass and a meticulously polished surface minimize light distortion and deliver clear, repeatable returns at distances up to 800 meters. Improved data quality in varied lighting: Enhanced reflectivity provides brighter, cleaner signals so total stations record consistent measurements even in low light or glare conditions. Robust field performance: A sturdy housing protects precision components from impacts and environmental exposure while preserving optical alignment across demanding jobsites. Simplified processing and compatibility: Calibrated with a 0mm constant for seamless integration with total stations and GPR1 GPH1 systems, reducing calculation offsets and simplifying data workflows. What it does (function and performance) Reflective optical element: Precision cut optical glass optimizes reflectivity and angle accuracy for reliable distance and position readings. Low distortion optics: Polished surfaces reduce scattering and maintain signal strength for clear, usable returns at long range. Durable construction: Built to resist shock and environmental damage while keeping internal optics aligned for consistent performance. Compatibility and specifications Effective range: Measurements within 800 meters. Optical material: Precision cut optical glass with polished finish for maximum reflectivity. Calibration: 0mm constant for direct compatibility with total stations and GPR1 GPH1 systems. Design: Rugged housing engineered to protect precision optics and maintain alignment in field conditions. Practical applications Land surveying: Use as a dependable reflective target for boundary surveys and control points up to 800 meters. Construction and engineering: Accurate stakeout and alignment on building sites and infrastructure projects where robust equipment is required. Topographic and combinedsensor surveys: Integrate with total stations and GPR1 GPH1 systems for coordinated surface and subsurface data collection with consistent calibration. Why choose this product Delivers precise, lowdistortion optical returns for longrange work Maintains performance in challenging lighting and harsh field environments Eliminates constantrelated offsets with 0mm calibration for easier, errorreduced data processing