<P> In the UK , the Ordnance Datum ( the 0 metres height on UK maps ) is the mean sea level measured at Newlyn in Cornwall between 1915 and 1921 . Prior to 1921 , the datum was MSL at the Victoria Dock , Liverpool . </P>
<P> In the UK , the Ordnance Datum ( the 0 metres height on UK maps ) is the mean sea level measured at Newlyn in Cornwall between 1915 and 1921 . Prior to 1921 , the datum was MSL at the Victoria Dock , Liverpool . </P>
where is sea level measured in the uk
where is sea level measured in the uk
Newlyn in Cornwall between 1915 and 1921
Newlyn in Cornwall between 1915 and 1921