File:Two benchmarks on the Bridgegate - geograph.org.uk - 751356.jpg
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English: Two benchmarks on the Bridgegate. I think that the two different benchmarks, on the road side western face of the Bridgegate, reflect two different surveys. It seems likely that the anchor mark and letters D[atum] S[urvey] were carved during the First Primary Levelling carried out between 1840-1860. The more familiar mark on the right may have been carved during the Second Geodetic Levelling carried out between 1912-21. I should add that I have not been able to prove this theory. There is a similar anchor benchmark on the Water Tower to the northwest of the city - see 680689 |
| Date | |
| Source | From geograph.org.uk |
| Author | John S Turner |
| Attribution (required by the license) | John S Turner / Two benchmarks on the Bridgegate / |
| Object location |  | View this and other nearby images on: OpenStreetMap |  |
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 This image represents a Benchmarks.org entry #27902. |
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This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by John S Turner and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
Attribution: John S Turner
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 16:37, 19 February 2011 | | 640 × 480 (100 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=Two benchmarks on the Bridgegate I think that the two different benchmarks, on the road side western face of the Bridgegate, reflect two different surveys. It seems likely that the anchor mark and |
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