File:BmEd.jpg
Summary
| Description |
An Ordnance Survey cut benchmark in Edinburgh, Scotland. © 2004, Jeremy Atherton The term benchmark originates from chiseled horizontal marks, like this one, that surveyors made into which an angle-iron could be placed to bracket (bench) a levelling rod, thus ensuring that the levelling rod can be accurately repositioned in the same place in the future. These marks were usually highlighted with a chiseled arrow below the horizontal line. |
| Date | 3 January 2006 (original upload date) |
| Source | No machine-readable source provided. Own work assumed (based on copyright claims).Category:Assumed own work |
| Author | No machine-readable author provided. JeremyA assumed (based on copyright claims). Category:Files with no machine-readable source |
 | A geocoded location could be added to this image. Visit Commons:Geocoding for information on how to add coordinates. Beta-test: Add coordinates helps to determine coordinates. |  |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
