Nautical mile 1 sea mile", followed by "For most practical purposes distance is measured from the latitude scale, assuming that one minute of latitude equals one nautical mile". One tenth of a nautical mile is a cable length. The derived unit of speed is the knot, defined as one nautical mile per hour. The metre was originally defined as of the meridian arc from the North pole to the equator passing through Dunkirk. The Earth’s circumference is therefore approximately 40,000 km. The equatorial circumference is slightly longer than the polar circumference – the measurement based on this (40,075.017 km x x =
Virginia State Route 240 with SR 788 (Railroad Avenue) and SR 810, on which Crozet Avenue continues north. SR 240 turns east onto Three Notchd Road. The state highway closely parallels the railroad for a short distance, then veers away and does not approach the rail line again until its eastern terminus at US 250 just west of the Mechums River west of Ivy. US 250 heads southwest as Rockfish Gap Turnpike and east as Ivy Road toward Charlottesville. Virginia State Route 240 State Route 240 (SR 240) is a primary state highway in the U.S. state of Virginia. The state highway runs between