This original vintage instruction book is perfect for owners of the Bernina Model 640 Automatic Sewing and 642 Zigzag machines. With clear and concise instructions, this manual will help you master the use of your machine and achieve professional-level sewing results. Whether you're a seasoned sewing enthusiast or a beginner, this manual is a must-have for anyone looking to get the most out of their Bernina machine. From basic threading and stitch selection to advanced techniques like buttonholing and embroidery, this manual covers it all. Don't miss out on this valuable resource for your sewing needs.