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Ell


An ell is a historical unit of length that was commonly used in medieval Europe, especially for measuring textiles and cloth. Its length varied by region but was typically about 45 inches (approximately 1.143 meters).


The ell originated from the length of the arm or forearm and was often used by tailors and merchants to measure fabric. Different countries had their own versionsβ€”for example, the English ell was about 45 inches, while the Scottish ell was longer, around 37 inches.


Although obsolete today, the ell played an important role in trade and clothing production before standardized measurements became widespread.


Summary:



  • 1 ell β‰ˆ 45 inches (1.143 meters)



  • Used mainly for measuring cloth and textiles



  • Length varied by region and country



The ell is now largely of historical interest but reflects the origins of many modern measurement systems.



Nautical Mile (International)


A nautical mile (international) is a unit of measurement used primarily in maritime and aviation contexts. It is defined as 1,852 meters or 1.852 kilometers, which is approximately 1.1508 statute miles. The nautical mile is based on the Earth's geometry, representing one minute of latitude along any meridian. This makes it particularly useful for navigation, as distances on charts and GPS systems often relate directly to degrees of latitude and longitude. The international nautical mile was officially adopted by the United States in 1954 and is now used worldwide for consistency in global navigation. It is closely linked with the knot, a unit of speed equal to one nautical mile per hour. The standardization of the nautical mile has greatly simplified communication and coordination in international travel, trade, and defense across oceans and airspace. Its use continues to be essential in global navigation systems today.



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