Convert mile (Roman) to link (US survey) Online | Free Length Converter

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Mile (Roman)


The Roman mile (mille passuum, meaning "a thousand paces") was a unit of distance used in ancient Rome. It measured approximately 1,000 double steps, or 5,000 Roman feet. One Roman foot (pes) was about 11.65 inches (29.6 cm), making the Roman mile roughly 4,850 feet or about 1,480 meters.


The Roman mile was used for measuring distances along roads across the Roman Empire, often marked by milestones (miliaria) placed at intervals of one mile. This system allowed for standardized road construction and efficient communication and transportation across vast territories.


Although shorter than the modern statute mile (1,609.344 meters), the Roman mile laid the foundation for the concept of mile-based distance measurement. The word "mile" itself originates from the Latin "mille," reflecting this Roman origin. Over time, the length of a mile evolved, eventually leading to the modern definitions used today.


Link (US Survey)


The US survey link is a unit of length used in the United States for land surveying, defined as exactly 7.92 US survey inches. Since one US survey inch is slightly longer than the international inch (due to the US survey foot), the US survey link is approximately 0.201168 meters.


It is part of the US survey system, derived from Gunter’s chain, which is divided into 100 links per chain (66 US survey feet). Links are used to measure small distances in surveying and land measurement.


Key facts:



  • 1 US survey link = 7.92 US survey inches



  • 1 US survey link β‰ˆ 0.201168 meters



  • 100 links = 1 US survey chain (66 US survey feet)



  • 25 links = 1 US survey rod (16.5 US survey feet)



Though the US survey units are being phased out, the US survey link still appears in historical land records and legal surveying documents.




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