I am almost positive there is an Excel spreadsheet on here someplace that gives various pen related tap sizes because I downloaded it a few weeks back, however I am unable to locate it now so I am uploading it to this post. I can't vouch for it's accuracy but maybe it is a start.
Well maybe I didn't get it here? I just tried to upload it as an Excel file and it error-ed indicating and invalid file type. I re-saved it as a PDF file and it uploaded OK so here you are.
Edit: I just happened to look down the forum posts and guess what I saw. That's right the posting where I originally found the spreadsheet. I wonder why the search function didn't find it?? jjudge it was your OP I found it in. BTW I must have converted it to the spreadsheet format because I note that yours is also a PDF.
I can send the excel file I'm using -- msg me if you want it.
I'll be putting a few updates in. The FountainPenNetwork.com folks have also contributed.
Then, later this week, I'll contact the IAP Librarian to get it into the library.