American surveyors sometimes used a longer chain of 100 feet (30.48 m), known as the engineer's chain or Ramsden's chain. The term chain in this case usually refers to the measuring instrument rather than a unit of length; the distances measured with such an instrument are normally measured in feet (and usually decimal fractions of a foot, not inches).
Read more about this topic: Chain (unit)
Famous quotes containing the word chain:
“Loyalty to petrified opinions never yet broke a chain or freed a human soul in this world—and never will.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)