 
 <translate> Q: Context: 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.

Question: where is sea level measured in the uk?
Let's give stream of consciousness below
 <ibo> Ajụjụ: N'ime UK, Ordnance Datum (elu 0 mita na UK map) bụ nkezi oke osimiri tụrụ na Newlyn na Cornwall n'etiti 1915 na 1921. Tupu afọ 1921, ebe a na-akpọ ya bụ MSL na Victoria Dock, Liverpool.  Ajụjụ: Ebee ka a na-atụ ọkwa oke osimiri na UK? Ka anyị nye stream nke nsụhọ n'okpuru 