| 摘要 |
A plurality of like fabric layers, each of which is formed with a concavely curved edge, a convexly curved edge, and a straight edge, are held together at one end with a metal grommet. A selected edge and selected numbers of layers are disposed under a presser foot against a thickened edge of material to be sewn to support and maintain the presser foot level, and to thereby prevent stitch shortening.
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