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Creata pagina con "The nibs are classified classically<ref>by classically it is meant referring to the initial period of the spread of the fountain pen, this type of classification has now virtu..."
The nibs are classified classically<ref>by classically it is meant referring to the initial period of the spread of the fountain pen, this type of classification has now virtually disappeared.</ref> based on a series of numbers expressing their size, although more or less all manufacturers have adopted similar figures (with values ranging from 00 to 12) the numbers do not have a reference to a precise measure, but are simply a relative indication (a nib #4 is usually larger than a #2 of the same manufacturer), and are different between a manufacturer and another. Very often, see for example the [[Numerazione Waterman|Waterman numbers]] and the [[Numerazione Montblanc|Montblanc numbers]], they were also used to identify the different models of a production line.