<P><b><center><font color=chocolate><font size=5>DOWNLOAD / PDF USER INSTRUCTION </center></font></font><P>Authorized reproduction of the users / instruction manual for Singer model 15 and 16, a round bobbin sewing machine. They are also know as the I.F., Improved Family and the I.M., Improved Medium, Central Bobbin models. It has basic information, oiling information and some troubleshooting information. It may be found in a treadle base. The model 16 will probably have a knee lifter.