Corn Exchange bolt mark
Introduction
The photograph on this page of Corn Exchange bolt mark by Neil Owen 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
Image: © Neil Owen Taken: 20 Nov 2014
This type of benchmark is a Bolt Mark - typical of the sort originally made in the first survey of Britain in the mid eighteenth century. See http://www.bench-marks.org.uk/bm51102 for the entry in the Benchmark Database for this mark which can be found on the old Corn Exchange - see Image