Probably a stupid question, but can someone tell me what is the difference between the Helical and Helical Twin version ?
Have been looking around and reading a buch of books but can't find any information or pics on the Twin version



B.t.w. I have 2 Helical myself, it's just that I would like to know how to recognize the Twin version

I have a spare spool that is marked "Helical Twin", but that doesn't really help in identifying the reel

Some time ago I put a topic in this forum about the Helical and their patent numbers, it is my guess the different patent-numbers on my Helical's could be explained that one has the body cover of a Twin (IF it would fit ofcourse

Jean-Paul