Thank you all for your answers! My friend put her long arm (Machine and frame) up for sale. One person wanted just the machine, and another person wanted just the frame. My friend didn't know who should get the carriage. It turns out that the person who wanted the machine already has a carriage, and the person who wants the frame does not have a carriage. So, I think my friend is very lucky to have it turn out so well splitting them up like that. Thanks again for your answers!