No. They are guides to fitting the sprockets so they give the best shifting; the Cs line up in a kind of curve. I am assuming these are old sprockets where each one is separate? A bit of googling will find you a guide to correct fitting of old Campag sprockets. I have a bag of them here in front of me infact. In my experience shifting isn't noticeably affected if you line them up correctly or not.
No. They are guides to fitting the sprockets so they give the best shifting; the Cs line up in a kind of curve. I am assuming these are old sprockets where each one is separate? A bit of googling will find you a guide to correct fitting of old Campag sprockets. I have a bag of them here in front of me infact. In my experience shifting isn't noticeably affected if you line them up correctly or not.