OS benchmark - canal bridge on Dickens Heath Road
Introduction
The photograph on this page of OS benchmark - canal bridge on Dickens Heath Road by Richard Law as part of the Geograph project.
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Image: © Richard Law Taken: 7 Jun 2017
An OS cutmark on the north-western parapet wall of the bridge over the canal. Originally levelled, probably in 1965, at 141.710m above Ordnance Datum Newlyn. And, yes, I agree, the datum line is quite a way off horizontal.