Bias Geodetic Marker

Bias 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: 37° 03' 53.547" N, 07° 47' 3.2976" W (37.06487417, -7.78424933). RGN identification: 1:50,000 sheet 53A, type PILAR TRONCO-CÓNICO S/ DEPÓSITO.

Altimetry: orthometric altitude at the top 86.53 m; at the base 56.23 m; ellipsoidal altitude at the top 138.88 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-53a-bias