Once used for mapping and surveying, now with modern technology obsolete

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A brass Bench Mark. This is set in a concrete pillar at a known height and was used as a fixed point for mapping and surveying. This was placed by the British Ordnance Survey (OS). The letter and number at the bottom is the code for this particular Bench Mark. With modern technology they are no longer used and are gradually disappearing.

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Size: 3264px × 4928px
Location: Parys Mountain, Amlwch, Anglesey, Wales, UK
Photo credit: © Jim Clark / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: amlwch, anglesey, bench, benchmark, bronze, copper, datum, making, map, mapping, mark, mon, mountain, mynydd, ordnance, parys, quarry, survey, surveying, uk, wales, ynys