Painswick
a Historic Market Town in the county of Gloucestershire
Shanklin
in the county of Isle of Wight
Kensington
in the county of Greater London
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Greater London · Charlton
Charlton House, CharltonStock Photo ID: 1174049Max size: 4288 x 3216 px Add to basket | Picture info..
All over Britain on Ordnance Survey maps there are heights and contours shown. All over Britain there are Ordnance Survey bench marks etched onto substantial buildings from which the height of the bench can be assertained, not to mention all the triangulation pillars with their heights recorded. All these heights all over Britain are based on the Ordnance Survey Datum level based on the mean sea level at Newlyn. There is a fundamental bench mark sealed in the end of the harbour pier.
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