Ordnance mark
Introduction
The photograph on this page of Ordnance mark by John Holmes 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.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk
Ordnance mark
Image: © John Holmes Taken: 4 Apr 2006
Information supplied by geographer is:- By the way what you have photographed is what is known as a PA bolt which stands for Published Abstract Bolt. The round thing in the centre of the bar is a piece of phosphor bronze set in the wall and has a horizontal mark cut in the end of the bar which is the mark the level is taken to.
Images are licensed for reuse under creativecommons.org/licenses/by-sa/2.0
Image Location
Latitude
54.749651
Longitude
-2.793848