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Length/Distance | Convert from diraa [Egypt] to mark twain |
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Common Length Conversions Metric Length Conversions Unit Definition (diraa [Egypt]) The diraa is a traditional Egyptian unit of distance equal to about 58 centimeters (22.8 inches). Unit Definition (mark twain) The mark twain or twain is an old word for the number two, derived from the Anglo-Saxon twegen. The American author Samuel Clemens (1835-1910), who had been a riverboat pilot on the Mississippi in his youth, took his literary name from a traditional riverboat phrase "mark twain", meaning "exactly two" fathoms of water. This was the minimum depth needed for the boats to operate safely without running aground.
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