Bench Mark, Cross Keys House
Introduction
The photograph on this page of Bench Mark, Cross Keys House by Maigheach-gheal 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: © Maigheach-gheal Taken: 17 Jun 2010
The bench mark is to be found on Cross Keys House (#21 Queen Street). For a wider view Image and for more information about the bench mark http://www.bench-marks.org.uk/bm34677 A bench mark is an Ordnance Survey arrowhead sign found on walls, bridges, churches and specially erected triangulation pillars where the altitude above sea-level has been accurately measured by surveyors. The arrowhead points to a horizontal line above it which marks the exact altitude. With rivets and pivots there is no datum (horizontal line) cut, the pointed-to horizontal surface defining the datum height.