Carved or screwed in to thousands of walls around the country are symbols or devices used for map making before the advent of the global positioning … [Read more...]
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Bench marks and levelling points
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Filed Under: Architecture, Featured Tagged With: Advent, Angle Iron, arrow, Bench Mark, Bench Marks, Bolt, Brackets, Buildings, Carved Stone, England Wales, Focus, Foundations, Global Positioning System, Granite, Great Britain, Half A Million, Haymarket London, Height Above Sea Level, Horizontal Line, Levelling Staff, Mainland, Metal Plates, Name Derives From, Observatories, Ordnance Datum, Ordnance Survey, Org Uk, Pillar, Rural Areas, Sandstone, Sea Level, Serial Number, Triangulation Pillars, Urban Areas








