what's the official name for that doohickey?
Hey, all- I picked up a nice (but dirty) Necchi 534fb. The pressure foot pressure adjustment knob is broken; when you push the button in the middle down, it pops right back up. I'd like to get a new one, but apparently 'pressure foot pressure adjustment knob' isn't what you really call it. What is it actually called, and does anyone know where I can get one? I would assume they're not OEM anymore, although I'm frequently surprised by what's still available new.