Convert digit (finger width) to line (button makers)
Selected category: length.
Definition and details for digit (finger width):
Digit is a unit of length equal to the width of a man's finger, used by the Middle East and Mediterranean ancient civilizations. One digit digit was equal to 0.75 inch or 19.05 mm.
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.