Key benefits Improved measurement reliability: quality optical glass boosts reflectivity for brighter, clearer returns, helping total stations register targets consistently even in low light or longrange conditions. Accurate results that save time: Precision manufacturing and a round, allangle design deliver stable, repeatable measurements and reduce the need for remeasurement. Simple, error data processing: Factory calibration to a 0 mm constant eliminates prismconstant adjustments and reduces calculation errors when used with compatible systems. What makes it stand out Precisioncut optical glass lens with a meticulously polished surface minimizes light distortion and maximizes reflectivity for clear visual returns. Round design ensures uniform performance from any orientation, improving workflow speed on site. Effective measurement performance up to 800 meters for longrange surveying tasks. Key specifications Lens material: precision optical glass Shape: round reflective target Prism constant: 0 mm (factory calibrated) Effective range: measurements within 800 meters Designed for professional surveying and engineering use Compatibility and calibration Calibrated with a 0 mm constant for seamless compatibility with total stations and GPR1 GPH1 systems. Calibration removes the need for additional prismconstant adjustments, simplifying setup and data integration. Practical advantages for users More reliable returns in challenging lighting or at long range, reducing field delays. Consistent readings from all angles reduce setup time and improve team efficiency. Fewer calculation corrections needed in postprocessing thanks to the 0 mm calibration. Typical applications Cadastral mapping and boundary surveys where repeatable, precision targets are required. Engineering layout and construction stakeout for accurate positioning and reduced rework. Longrange topographic and control surveys up to 800 meters where strong reflectivity and stability are critical. What you get A precision optical glass reflective target designed for professional land surveyors and engineering projects, built to provide accurate, repeatable measurements and straightforward compatibility with total stations and GPR1 GPH1 systems.