T 15 — NGS TU0518 — Honolulu County, US

This triangulation station is part of the National Geodetic Survey's network, which establishes the fundamental geodetic framework for the United States. Located in Honolulu County, Hawaii, at coordinates 21.66806°N, 158.04667°W, this trig point serves as a control station for surveying and mapping activities across the Hawaiian Islands. Trigonometric stations function as precise horizontal control points, enabling surveyors and mappers to reference their work to established geodetic datums. These monuments support cadastral surveys, engineering projects, and cartographic efforts requiring positional accuracy. The location within Hawaii's island chain places this station within an important surveying network for the Pacific region. Documentation and periodic verification of such benchmarks remain valuable for maintaining survey accuracy, ensuring consistency in spatial data, and supporting the long-term integrity of the geodetic infrastructure. Surveyors conducting work in this area may reference this station for localization and quality assurance of measurements.

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