6 12 A — NGS TU0555

This triangulation station is part of the NGS network, which maintains the foundational geodetic control for surveying and mapping throughout the United States. Triangulation stations serve as precisely positioned reference points established through classical surveying methods to support large-scale coordinate systems and spatial data accuracy. Located at coordinates 21.57861° N, 158.22444° W in U.S. territory, this benchmark contributes to the horizontal control network in its region. As a trig point, it was designed to be intervisible with other stations, enabling surveyors to extend precise measurements across distances. Documentation and verification of such control points remain essential for professional surveyors, engineers, and geospatial practitioners. Confirming the continued existence, accessibility, and positional integrity of these marks helps maintain the reliability of the national coordinate framework for modern surveying applications.

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