Convert link (US survey) to X-unit Online | Free Length Converter

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:

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  1 US survey link = 7.92 US survey inches

  
  
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  1 US survey link ≈ 0.201168 meters

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

  
  
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  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.

X-unit

The X-unit (symbol: xu) is a very small unit of length used primarily to measure wavelengths of X-rays and gamma rays. It was introduced in the early 20th century for precision measurements in X-ray crystallography.

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  1 X-unit ≈ 0.1 picometers (pm) or 10⁻¹³ meters

  
  
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  It allows scientists to express extremely small wavelengths typical of X-rays, which are on the order of atomic spacing

  
  
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  The exact definition has varied historically, but the unit remains useful for comparing wavelengths in X-ray spectroscopy and crystallography

  
  

Though largely replaced by the picometer or ångström in modern usage, the X-unit played a crucial role in early developments of atomic-scale measurement.