The brass plate used as a mounting point for a theodolite on top of a concrete British Ordnance Survey triangulation point, or Trig Point

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Size: 4096px × 2731px
Photo credit: © Gary Perkin / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: bench, britain, british, coordinates, elevation, geodetic, map, mark, measurement, metal, number, ordnance, pillar, plate, point, reference, survey, surveying, theodolite, triangulation, trig