This is a scan of a photocopy of Porath's rapier manual, in Swedish. I think the original is in the Helsinki University Library, but I'm not sure where the photocopy came from; I just found it in my many files.
As ever, it's yours free, or pay what you want. I assert no copyright or other claims over it. This is your birthright, do something beautiful with it!
I would appreciate whatever contribution you choose to make, from simple cash, to a kind review, or any other thing.
You can get a cleaner, better copy here from the Swedish Royal Library, but I'm not sure about their reproduction policy: http://weburn.kb.se/eod/4040/NLS12A004040.pdf