the ordnance survey bench mark side british triangulation point trig
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the ordnance survey bench mark side british triangulation point trig |
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| navigate by keyword : bench britain british coordinates elevation geodetic map mark measurement metal number ordnance pillar plate point reference survey surveying triangulation trig |
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| The Ordnance Survey Bench Mark on the side of a British triangulation point, or Trig Point. |
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Stockphotos.ro (c) 2024. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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