Authorized reproduction of the users / instruction manual for a Singer Improved Family, a pre model 15 round bobbin sewing machine. This machine has a fiddle base and an unusual bobbin, shuttle system. Please study the shape of the bobbin in this one because it is flatter that the one in the other I.F. manual that we have listed. It was one of Singers first attempts at a round bobbin sewing machine and would be found in a treadle base or as a hand cranked machine. It has detailed operating and some oiling and troubleshooting information. Attachments are not covered. They would have been found in a puzzle box and yes, we have the puzzle box manual for this machine.