JimGo
Member
OK, I need some help, please. I don't make many fountain pens (only 1 to date), and don't have any in my current "stash" of goodies, but I'm playing with some alternative designs for a fountain pen and need to know the dimensions of the refills and pumps. IIRC, different pumps and refills made by different manufacturers are different sizes (but most have a common adapter size), so any assistance would be greatly appreciated!