Hi,

Here is the information from our Technical Manager confirming the size measurements for the Conway Stewart nibs.

* Extra Fine 0.5 mm
* Fine 0.7 mm
* Medium 0.9 mm
* Broad 1.2 mm
* Extra Broad 1.4 mm
* An italic nib is about 0.1 mm wider than its standard counterpart.

Kind regards,

Mary Burke