Originally Posted by chris_quilts
Two spools refers to to a National machine . . . I have one and it's a treadle. Not sure if they were ever e-machines or just people powered ones.
Yes, they did come in an electric version, and if you can find a cabinet, they can be converted back. I do know that the National Rotary is the same size as the Two Spool, so you can have one cabinet and two wonderful machines!