Most European burner are sized in lignes, indicated with the letter L. Lignes are an old french measurement, 1/12 of a French inch or 1/144 of a French foot, 1 ligne equals 2,256 mm. The size of a flatwick is the width of this wick in lignes. Different burners have copmpartments for wicks with a different wick thickness, the ligne needed differs from one model to another.
This wick is the matching replacement wick for our paraffin oil ceiling lamp.

In the evolution of non-electric sources of light, lamps burning paraffin oil have always played an important role – particularly those with a round wick and a centre draught burner. These burners are equipped with a flat, wide wick which not only links the reservoir with the burner but forms a circle in the burner unit and therefore gives off far more light than an ordinary flat wick burner and also burns more evenly. The round wick burner produces no sooty smoke and virtually no smell.
The Karlskrona Lampfabrik has been operating from the South Swedish harbour town of the same name since 1884 and thanks to its extensive experience produces paraffin lamps with centre draught burners of the highest quality. Paraffin lamps still have decisive advantages over electric light sources: they work without a nearby source of electricity, they can be used in times of crisis, and they create a pleasantly warm, romantic light.