OSBM Flush Bracket G3326 - Silian, Glan-Denys
Introduction
The photograph on this page of OSBM Flush Bracket G3326 - Silian, Glan-Denys by N Scott as part of the Geograph project.
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Image: © N Scott Taken: 11 Feb 2015
Ordnance Survey Benchmark (OSBM) used for levelling height above Ordnance Datum (OD). Height (1955): 137.5285m OD (Newlyn). Mark verified by the Ordnance Survey in 1974. Description: FL BR G3326 BLDG GLAN DENYS NW FACE. 0.2m above ground. 1st Order BM. The bracket was used on the Lampeter to Llandovery line (G098) of the Third Geodetic Levelling of England & Wales in 1955. Abstract G 65: http://discovery.nationalarchives.gov.uk/SearchUI/details?Uri=C11264473 [OS 54/754] Context: Image