Ordnance Survey surveyors benchmark carved in stone on a wall in Lancaster England

Size: 2826px × 4313px
Photo credit: © Michael Sayles / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: altitude, bench, benchmark, benchmarks, carved, carving, mark, marker, network, ordnance, precise, stone, survey, surveyor, surveyors, wall