OS benchmark - Lyndon, Hallam St
Introduction
The photograph on this page of OS benchmark - Lyndon, Hallam St by Richard Law as part of the Geograph project.
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Image: © Richard Law Taken: 29 Nov 2016
A clear OS cutmark on the wall outside the hospital (the part that is described as the Union Workhouse on older maps.) It was originally levelled at 504 feet 6 inches, but was last checked and relevelled in 1962 at 153.528m above Ordnance Datum Newlyn.