307A
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307A is a boundary_stone located in Netherlands, catalogued in the OpenStreetMap contributors dataset. The point has been assigned the stable identifier #549950 on SurveyingPedia. Its coordinates in WGS84 are 51.209250°, 3.824124°, corresponding to 51° 12′ 33.30″ N, 3° 49′ 26.85″ E in the traditional degrees-minutes-seconds format. This page is a self-updating reference — all data is aggregated from public open sources and cross-checked periodically against the originating agency.
Professional surveyors, engineers, and topographers use points like 307A to anchor total-station traverses, verify GNSS/RTK solutions, calibrate levelling instruments, and validate survey deliverables against known coordinates. The record on this page is refreshed daily via automated pipelines that monitor the public sources for any updates, corrections, or status changes.
Coordinate formats
| WGS84 (decimal) | 51.209250, 3.824124 |
| WGS84 (DMS) | 51° 12′ 33.30″ N, 3° 49′ 26.85″ E |
| UTM zone (approx.) | Zone 31N (approx.) |
| Precise conversion | Open in coordinate converter → |
Geodetic context in Netherlands
The national geodetic reference in Netherlands is maintained by Kadaster (RDNAP). The active datum is RD-Amersfoort. Coordinates shown on this page are expressed in WGS84 (ETRF/ITRF-compatible) which is directly usable in most modern GNSS receivers. For cadastral work in Netherlands you may need to convert to the local datum using the Coordinate Hub.
Browse the full list of indexed control points in Netherlands from the country page.
Nearby benchmarks
The closest 6 indexed control points within roughly 50 km of this location:
Frequently asked questions
What is 307A?
307A is a boundary_stone located in Netherlands, catalogued in the OpenStreetMap contributors network. It has the public identifier #549950. The point is used for geodetic reference, topographic surveys, and related measurement workflows.
Where are the exact coordinates of 307A?
The position of 307A in WGS84 is 51.209250°, 3.824124° (decimal), or 51° 12′ 33.30″ N, 3° 49′ 26.85″ E in degrees-minutes-seconds. For planar surveys in Netherlands this falls approximately in UTM Zone 31N (approx.).
How can I reach and visit this boundary_stone?
Use the satellite imagery above to see the surrounding area. You can open this location directly in Google Maps, Google Earth, Bing Maps, or OpenStreetMap using the buttons provided. Many geodetic points are accessible to the public; some are on protected or private land — check local regulations before any field visit. Always bring documentation or your credentials if you plan to use the marker for professional measurement.
Is this point verified and usable for professional surveying?
This record has been community-verified 0 times. Data quality depends on the source: NGS and official national agency points are typically centimetre-accurate, OpenStreetMap survey points are metre-accurate, and GeoNames topographic landmarks (peaks, hills) are reference-grade only. Always cross-reference with the original agency datasheet before using this point for cadastral, legal, or safety-critical work.