Meaning Of The Word Ordnance datum
What's the definition of Ordnance datum? Find Ordnance datum meanings, definitions and more at the Real Dictionary online.
Ordnance datum Meaning
| Ordnance datum Definition |
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What's The Definition Of Ordnance datum?
ordnance datum in British English
noun: mean sea level calculated from observation taken at Newlyn, Cornwall, and used as the official basis for height calculation on British maps |
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