The BERNINA Patchwork Foot #37D is a precision specialty presser foot designed for quilters who demand accurate seam allowances in piecing work. Engineered specifically for straight-stitch sewing, this foot makes it easy to achieve consistent 1/4" and 1/8" seams the foundation of professional patchwork and quilting. Three evenly spaced guide markings on the side of the foot and a narrow thread channel under the flat sole ensure smooth fabric feeding and perfectly aligned seams every time. Key Features Precision guide markings allow accurate 1/4" and 1/8" (6 mm and 3 mm) seam allowances for piecing Three evenly spaced notches on the side of the foot, positioned 1/4" apart, guide precise fabric alignment Flat sole with narrow groove underneath serves as a thread channel for smooth fabric feeding Straight-stitch design optimized specifically for patchwork and quilting projects Side markings make square insertion of patchwork pieces easier and more accurate Compatible with BERNINA 9 mm machines including aurora, artista, and 8-Series models Durable construction ensures long-lasting performance through countless quilting projects Specifications Foot Type Patchwork/Quilting Presser Foot Seam Allowances 1/4" (6 mm) and 1/8" (3 mm) Machine Compatibility 9 mm BERNINA machines Guide Markings Three notches, 1/4" spacing Sole Design Flat with thread channel groove