Jump to content

Ordnance datum

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by 80.3.160.7 (talk) at 16:35, 27 August 2005. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)

Ordnance Datum

Ordnance Datum is defined as the mean sea level at Newlyn in Cornwall as calculated between 1915 and 1921. It's taken as a reference point for the height data on all Ordnance Survey [1] maps in the UK.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Ordnance_datum&oldid=21967485"