Ligne

The Paris line is an ancient measure of length that was used in the 17th to 19th century Europe as a reference unit. A Parisian line corresponds to 1/12 inch and 1/144 Parisian feet.

1799 the standard meter was set to 443.296 Parisian lines. It follows that a Parisian line is about 2.2558 mm.

This reference measure has been used in science, for example, of Newton, watchmakers, typesetters, opticians and in the historical metrology.

• A movement with the size of 11.5 lines accordingly has a diameter of 25.9 mm.
• In metrology, the sensitivity of tubular spirit was given in seconds of arc per line.
• Also lines the wick widths of oil and kerosene lamps are traditionally given. Over time, the unit became more and more used for the classification of the lamp size per se. A lamp with a 14- ligne wick was a 14 - ligne lamp, which included a 14- ligne Zugglas and a tank with 14- linigem thread ( vases ring).
• The traditional system of measurement used in typography defined as 1/6 Paris Didot - point line as a unit.

• Ancient weights and measures ( Europe)
• Unit of length