When it comes to nib size, fountain pen users have a multitude of choices. Recently I was doodling with the inky beauties on my desk and was struck by the differences between them. Even two from the same maker and of the same width produced varied results. Getting the perfect line size to show your writing to its best may take a little trial and error, but the satisfaction in seeing your words look their best is worth it.
I have become an equal opportunity user though I was stuck on narrow nibs for a very long time. Most fountain pen nibs are either fine or medium with a smaller number available in broad and extra-fine widths. The tip of the nib is round in shape, a bit like a ball point pen when you put it to paper. That angle of contact suits general use very well.
Moving beyond the typical nib, the sweet spot where nib meets paper becomes less forgiving and requires more care in use. If it suits your writing style, even an exotic nib should work well once you get the hang of it. Less common categories include double broad (BB), stub, italic, cursive italic, music, and Arabic. There are other exotic nibs but they are too rare for a general discussion.
If a rigid nib doesn’t thrill you, there is a unique characteristic called flex which can be an attribute of any sized nib. It is measured in degrees from a soft give that produces just a slight squish with pressure to a wet noodle that puts down ink like a paint brush.
Another quirk is that Asian nibs for the most part are more narrow than Western nibs. Add to that the interplay between nib, ink and paper as well as the rate of flow from the ink supply to the nib tip and the range of line widths can get ridiculous.
Still there is a range and that is what the image demonstrates. Size is relative.
Note that the ink scan has not be color adjusted. Take that aspect of this post with a grain of salt.