Ligne -a button measurement unit

Jerry Huang 18,Aug,2019

In the 18th century German button makers began to use the term ligne to measure the diameter of buttons, abbreviated as “L”. The consensus definition was that a ligne was the measurement of a round wick, folded flat. In this sense it measures ​1⁄40 of an inch, namely 1 ligne is equal to 0.635mm. It remains in use today, so if you are a freshman in button industry, and you don't know the ligne unit,the above unit conversion would help you to convert linge into metric units. For example, according to the above conversion relation, 10L is equal to 6.35mm(10*0.635),and 12L is equal to 7.62mm(12*0.635),ect. Herein attached a chat for your reference. Hoping the above tip will bring some benefits to you! Thank you!