Eira Geodetic Marker

Mação (Portugal) Geodetic Marker

Key Facts

  • Source: RGN
  • Coordinates: 39.62247197, -7.90587361
  • RGN sheet: 28A
  • Marker type: PILAR TRONCO-CÓNICO
  • Top altitude: 384.53 m
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Eira Geodetic Marker is a point in the Portuguese National Geodetic Network (RGN), the reference network used for mapping, surveying and geographic measurement in Portugal. Coordinates: 39° 37' 20.8991" N, 07° 54' 21.145" W (39.62247197, -7.90587361). RGN identification: 1:50,000 sheet 28A, type PILAR TRONCO-CÓNICO. Altimetry: orthometric altitude at the top 384.53 m; at the base 381.85 m; ellipsoidal altitude at the top 439.85 m. This record is based on official RGN coordinate data and is useful for understanding the landscape, planning map work or identifying a precise geographic reference point. Local access conditions can vary, so check the terrain before visiting. RGN source ID: rgn-28a-eira

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