Ordnance Survey PA Bolt Benchmark - Aberaeron Town Hall
Introduction
The photograph on this page of Ordnance Survey PA Bolt Benchmark - Aberaeron Town Hall by N Scott as part of the Geograph project.
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Ordnance Survey PA Bolt Benchmark - Aberaeron Town Hall
Image: © N Scott Taken: 12 Jul 2024
Ordnance Survey Benchmark (OSBM) used for levelling height above Ordnance Datum (OD). Height (1975): 5.6141m OD (Newlyn). Mark verified by the Ordnance Survey in 1975. Description: TH ABERAERON NE SIDE MARKET ST W ANG SW FACE. 0.7m above ground. 3rd Order BM. SN 4580 6292 The bolt was included as a branch level from mark 665 on the Warrington to Pembroke Docks line of the First Primary Levelling of England & Wales in 1851-1852. It was levelled with a height of 18.437' above OD (Liverpool). Description: Aberaeron Town-hall. Bolt in corner ; 2.30 ft. above surface. Page 535 of the abstract: https://www.bench-marks.org.uk/abstract/ew1gl/1GLA_535.png Close-up: Image
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Image Location
Latitude
52.242801
Longitude
-4.260043