Originally Posted by Diamondrose
I don't have any information for you but I'd be tempted to take a chance on it. You might be able to tell if it is rotary (round bobbin) or vibrating (long narrow bobbin and plate) by looking at the slide plate. I have a late 1800's treadle that can use class 15 and class 66 bobbins in it in addition to the original ones that came with it.
The plate on mine lifts up it doesn't slide - just wondering if
the domestic is the same way.
another good pt...never thought of lifting...only sliding...will give that a try...thanks...I did notice the plate is narrow so I'm thinking it might be that bullet type now......