Ligne Sizing "L":
A button's ligne, refers to a button's size. The word ligne is a French term that became the standard reference used by button manufacturers in the early eighteenth century. Today, Ligne is the internationally recognized standard for button sizing.
40L to the American Inch.
20L - 1/2" = 12mm
22L = 9/16" = 14mm
24L = 5/8" = 15mm
30L = 3/4" = 19mm
36L = 7/8" = 23mm
40L = 1" = 25mm
45L = 1 1/8" = 28mm
60L = 1 1/2" = 38mm
Sizes listed on the website are approximate and may vary slightly from button to button.