Originally Posted by
quilt938
That wire looking thingy in the picture is the thread guide for threading the machine to sew with it, the round disc thingy is the tension for winding a bobbin. You can tape a small paper clip right there to use as a thread guide. The 237 is a favorite for it's satin stitch, touted to be the best of any vintage machine. It can also be treadled, many people love using it that way.
Cari