OS benchmark & bolt - Llandrillo, St Trillo's church
Introduction
The photograph on this page of OS benchmark & bolt - Llandrillo, St Trillo's church by Richard Law as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
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OS benchmark & bolt - Llandrillo, St Trillo's church
Image: © Richard Law Taken: 15 May 2019
Levelled in 1942 at 161.945m above Ordnance Datum Newlyn, although the bolt predates that by a considerable period, being shown on older maps (circa 1900) at 531.1ft above sea level. That in turn would probably have referred to Liverpool Datum, in so much as the PA bolt is likely to have been installed during the 1st Primary Levelling of England & Wales in 1859.
Images are licensed for reuse under creativecommons.org/licenses/by-sa/2.0
Image Location
Latitude
52.922238
Longitude
-3.438135