Convert chain (Gunter or Surveyor) to line (button makers)
Selected category: length.
Definition and details for chain (Gunter or Surveyor):
Chain (Gunter or Surveyor) is a traditional unit of length used by surveyors equal to about 20.11 meters. Gunter chain was introduced by the English mathematician Edmund Gunter (1581-1626) in 1620.
Definition and details for line (button makers):
U.S. button maker use the "line" unit of length to measure buttons. This unit is equal to 1/40 inch or 0.635 mm. It was probably introduced by German immigrants, who used since ninth century a different version of "ligne" equal to 1/40 inch to measure buttons.