OS Fundamental Benchmark - Silian, Lampeter FBM
Introduction
The photograph on this page of OS Fundamental Benchmark - Silian, Lampeter FBM by N Scott as part of the Geograph project.
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OS Fundamental Benchmark - Silian, Lampeter FBM
Image: © N Scott Taken: 11 Feb 2015
Ordnance Survey Fundamental Benchmark (FBM) used for levelling height above Ordnance Datum (OD). Height (2012): 223.2416m OD (Newlyn). GPS Passive Station: H1SN5752 http://www.ordnancesurvey.co.uk/gps/legacy-control-information/H1SN5752 The FBM was used on the Aberystwyth to Lampeter (G092) and Lampeter to Llandovery (G098) lines of the Third Geodetic Levelling of England & Wales in 1955. It was levelled with a height of 732.413' above OD (Newlyn). Abstract G 65: http://discovery.nationalarchives.gov.uk/SearchUI/details?Uri=C11264473 [OS 54/754] Context: Image
Images are licensed for reuse under creativecommons.org/licenses/by-sa/2.0
Image Location
Latitude
52.153615
Longitude
-4.077304