N 4 — NGS TU0514 — Honolulu County, US

This is a triangulation station within the National Geodetic Survey network, a foundational component of the United States' horizontal control infrastructure. Located in Honolulu County, Hawaii, this trig point serves as a reference station for establishing accurate horizontal positions across the Hawaiian archipelago and surrounding regions. Triangulation stations of this type were historically observed and computed to create a network of known positions, enabling subsequent surveys and mapping efforts. The coordinates 21.69194°, -158.02139° establish this point's location relative to the national datum framework. Verification and documentation of such benchmarks remain important for surveying professionals conducting boundary surveys, mapping projects, and engineering work. Confirmation of mark condition and recovery of original monumentation data support the continued utility of these geodetic reference points in modern surveying applications.

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