When I was looking to have a few nibs modified I had a hard time comparing different nibs to decide whether I wanted a stub, a cursive italic, or a full italic. Now that we have a few different ones lying around the house I decided to write with them all on the same paper. It would seem I was overly concerned for no reason. There isn't a whole lot of difference between all these pens. Mostly just the width of the nib and the size stroke it creates.
Control sample is just a normal fine nib to reference a lack of line variation between vertical and horizontal strokes.
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