http://www.myarmoury.com/albums/displayimage.php?album=17&pos=204 50 in.
http://www.myarmoury.com/albums/displayimage.php?album=17&pos=205 49 in.
And then there is what Oakeshott said about lengths.
http://www.myarmoury.com/feature_oakeshott2.html#typeXVa
If people were smaller, we must consider that swords coming up just under the arm pit might indeed be about 48 in. Only Vadi specifically prescribes a certain length. Other legnths were present. He must prefer the length which he proscribes while other prefer different lengths. The public ARMA page includes this commentary on Vadi:
Vadi refers to several types of the spada (“sword”) including large swords, small swords, and spada da doi mane (“two handed swords”), all of which appear as forms of long-sword or great-sword.
So is it the two handed sword that comes up to the arm pit or the large sword? Vadi also gives more specific instructions on other characteristics of swords. I have seen the "swords should come up to your arm pit" line quoted several times, however I have not seen Vadi quoted on the other ways he says swords should be.
I think period examples are the best way to find out what type of swords people were actually fighting with and what we should be using today. Like Doebringer, Vadi's teachings constitute preferences which may first seem out of place with the other teachings of the day but actually thows light on the variety of interpretation and diversity of teachings present in western martial arts.
