6 9E — NGS DR2147 — Honolulu County, US

This trigonometric station is part of the National Geodetic Survey's network of control points distributed across the United States and its territories. Located in Honolulu County, Hawaii, at coordinates 21.53900° N, 158.09092° W, this trig point serves as a fundamental reference for surveying and mapping activities in the region. Trigonometric stations of this classification historically provided precise positional control for cadastral surveys, engineering projects, and cartographic work. The NGS maintains such benchmarks as part of the National Spatial Reference System, ensuring consistent geodetic frameworks across jurisdictional boundaries. Verification and documentation of existing control points remain essential for surveyors conducting new work, as they establish known positions from which to reference subsequent measurements. This point's continued accessibility and accurate records support the surveying profession's foundational infrastructure requirements.

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