LB139

This trig point forms part of a local geodetic network in France, serving as a control station for surveying and mapping operations within its region. Located at coordinates 49.76535°N, 5.81111°E, the benchmark functions as a three-dimensional reference for establishing positions of secondary survey points and infrastructure projects. As a trigonometric station, it historically supported triangulation campaigns essential to cadastral and topographic surveys. Local networks such as this complement France's national geodetic framework, providing intermediate-scale control density where higher-order networks require supplementation. The absence of recorded elevation data underscores the importance of verification and documentation efforts for heritage survey marks. Confirming the physical condition, accessibility, and precise coordinates of such benchmarks remains valuable for modern surveying professionals undertaking boundary demarcation, engineering projects, and spatial data validation across the region.

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