Q 15 — NGS TU0521 — Honolulu County, US

This triangulation station is part of the National Geodetic Survey's network of control points establishing the geodetic framework across the United States and its territories. Located in Honolulu County, Hawaii, this trig point serves as a reference station for horizontal control, supporting surveying, mapping, and engineering projects throughout the region. Triangulation stations of this type historically provided the foundational accuracy necessary for large-scale coordinate systems before modern satellite positioning became standard. The documented coordinates and network affiliation make this point valuable for verifying local survey work, establishing relative positions for subsequent measurements, and maintaining consistency in spatial data. Surveyors and GIS professionals may reference this station to validate survey-grade positioning or to understand the historical geodetic control structure of Hawaii. Documenting and preserving such benchmarks remains important for professional practice and historical geodetic records.

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