That is so cool. I'd love to have a pattern someone I knew or was related to used. I know of no other knitters in my family, a few crocheters but they don't use patterns. What metric to U.S. conversions are you wondering about? If it's needle size, my gauge tells me 5.76 mm is a U.S. 10 and 6.5 mm is U.S. 10 1/2. When I have a pattern that measures in cm I just use cm if the inches aren't given. I figure it doesn't hurt to get familiar with such things.
I'm looking forward to your photo. Hat and sweater. Oh yeah, congrats on being so close to done with the sweater. I think you just might be a knitting machine.