Key benefits Eliminates offset errors and speeds data processing: factorycalibrated with a 0mm constant so measurements integrate directly with survey software without additional offsets or manual corrections. Clear, reliable returns at long range: precisioncut optical glass and a reflective surface produce bright, lowdistortion returns for accurate readings up to 800 meters. Durable and fieldready: robust housing and stable optical alignment protect the internal components from impacts, dust and moisture so the reflector keeps performing in demanding site conditions. What this product does Function: precision reflective target for use with total stations and compatible systems. Compatibility: specifically calibrated to work seamlessly with total stations and GPR1 / GPH1 systems, preserving system workflows and measurement integrity. Calibration: 0mm constant removes the need to apply instrumentspecific offsets during postprocessing. Key features and performance Precision optical glass lens: precisioncut and polished to minimize light distortion and maximize reflectivity for consistent, quality signal returns. Effective range: engineered for accurate measurements within 800 meters under normal surveying conditions. Enhanced reflectivity: improved reflection capability maintains measurement accuracy in varying and challenging lighting conditions. Sturdy construction: durable materials and protective housing keep the optical assembly aligned and safe from field impacts and environmental damage. Reliability: consistent optical alignment and protected components reduce downtime and recalibration frequency on site. Practical applications Land surveying: use as a primary reflector for property boundary surveys, control point observations and topographic data collection. Construction and engineering: position on stakeouts, control stations and verification points on construction sites where durability and longrange returns are required. Longrange topographic surveys: deploy for elevation and distance measurements on large parcels, corridors and infrastructure projects where distances approach the 800 m range. Why professionals choose it Direct compatibility with total stations and GPR1/GPH1 systems reduces setup complexity and avoids calculation errors. Opticalgrade glass and enhanced reflectivity deliver repeatable, quality measurements at long ranges. Rugged design preserves alignment and functionality in harsh field conditions, reducing replacements and service interruptions. Included specification highlights Calibration: 0mm constant Compatible systems: total stations, GPR1, GPH1 Optics: precisioncut optical glass lens, polished surface Effective measurement range: within 800 meters Construction: impactresistant housing that maintains optical alignment Use this reflector when you need accurate, repeatable longrange measurements, minimal postprocessing, and a durable target that holds alignment on demanding survey and construction sites.