Convert mile (ancient Roman) to line (button makers)
Selected category: length.
Definition and details for mile (ancient Roman):
A mile was the distance a Roman legion could march in 1000 paces or 2000 steps. Pace is the distance between successive falls of the same foot. Measured distance between surviving milestones of Roman roads is often closer to 1520 meters.
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.