The Right / left seam guides are useful tools for ensuring precise seam allowances,. They act as a limit and guide for accurate seaming.
Bernina Seam Guides
bernette 38
Tips For Stitching with Seam Guides - WeAllSew
Bernina Seam Guides
BERNINA accessory catalogue – English by Bernina International AG - Issuu
How to Sew a French Seam - WeAllSew
bernette 79
Bernina Seam Guides
Bernette B79 Sewing & Embroidery Machines