Convert line (button makers) to millimicron
Selected category: length.
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.
Definition and details for millimicron:
Millimicron (mµ) was used in past as a metric unit of distance equal to 0.001 micron. Now it's been replaced by its equivalent, the nanometer.