Jim P.

Father, geek, serial hobbyist.

It came up the other day that one of my Jinhao 80 pens has a less common nib, and it was one I cleaned yesterday, so here it is.

Both of these are Jinhao 80s. Top is the "Ultra Fine"/UF nib, marked "03" for 0.3mm. Bottom is the typical EF (~0.38mm).

You can see it is a little thinner and the tipping is a different shape but that could also be random manufacturing differences. Not sure if the feed is actually different despite it having a different number (7 vs 5).

Photo of two fountain pen nibs taken from the top-down. Both nibs are labeled with "Jinhao" and the company logo. The top nib is marked "03", the bottom nib is marked "EF". The tip of the nib on the top pen is ever so slightly thinner.
Photo of two fountain pen nibs taken from the bottom. The tip of the nib on the top pen is ever so slightly thinner, shorter, and shinier.
Photo of two fountain pen nibs taken from the side. The tip of the nib on the top pen is has a little more material on the underside, the bottom pen has more on the upper side.

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