1) Linear unit 2) Obsolete unit of measurement 3) Swiss-watch unit 
The ligne (from the French word meaning `line`) is a unit of length that was in use prior to the French adoption of the metric system in the late 18th century, and is still used by French and Swiss wristwatch makers to measure the size of a watch movement. == Watchmakers` use == There are 12 lignes to one French inch (pouce). The standardized c......
A unit of measurement developed in France and still used in the Swiss industry for gauging the diameter of a movement. One ligne (1```) is one-twelfth of a pre-metric French inch, or 2.256mm.
A unit of measure used to determine the width of a bracelet. 40 lignes are equal to 1 inch
[n] - a linear unit (1/40 inch) used to measure diameter of buttons
noun a linear unit (1/40 inch) used to measure diameter of buttons