F 15 — NGS TU0592 — Honolulu County, US

This trigonometric station is part of the National Geodetic Survey's network of control points, which establishes the fundamental horizontal and vertical reference framework for the United States. Located in Honolulu County, Hawaii, at coordinates 21.55444°N, 158.10528°W, this trig point serves as a positioning reference for surveying, mapping, and engineering projects throughout the region. Trigonometric stations function as precise geodetic monuments, typically positioned at elevated or strategically visible locations to facilitate triangulation and distance measurements. The NGS network provides essential control for civilian and governmental surveying activities, enabling accurate cadastral surveys, infrastructure development, and spatial data collection. Verification and documentation of such benchmarks remain critical for maintaining the integrity of geodetic infrastructure. Regular recovery and monumentation checks ensure continuity in surveying accuracy and support modern positioning technologies integrated with classical geodetic networks.

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