I have that very machine. We bought it in 1968, the year married and moved to Germany with my hubby. He was in the Air Force. I still have it and love it. It still sewes like a charm. It does zz but you need a different foot. Mine came with a foot for zz that is always what I used. It has 2 plate covers, one for streight , I never have used it, and one for zz.It also has a zipper foot. I still sew on it when I have the brother 8200 and brother 150 doing embroidery. I still love my 237.