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sewing machine [3]click to hear

Machine used to assemble two pieces of fabric by means of a series of stitches made with a needle and thread.
sewing machine [3] tension block thread guide tension disk tension dial tension spring

tension block click to hear

Parts that control the tension of the upper thread.

thread guide click to hear

Part that leads the thread toward the tension disk.

tension disk click to hear

Each of the parts between which the thread passes during threading.

tension dial click to hear

Graduated dial used to regulate the tension of the upper thread.

tension spring click to hear

Spring that keeps the upper thread between the tension disks.