In Spanish: de MilĂmetros a Millas marinas británicas
Millimeters
(European spelling: millimetre) One thousandth of one meter or 0.0394 inches.
UK Nautical Miles
Nautical miles measure distance. 1 nautical mile is the angular distance of 1 minute of arc on the earth's surface. As these differ slightly (6108' at pole c.f. 6046' at equator) 6080 was adopted (this being it's approximate value in the English Channel). The International nautical mile is 1852 metres, so is very slightly different from the UK nautical mile.
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