sewing machine [3]

Machine used to assemble two pieces of fabric by means of a series of stitches made with a needle and thread.

tension block

Parts that control the tension of the upper thread.

thread guide

Part that leads the thread toward the tension disk.

tension disk

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

tension dial

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

tension spring

Spring that keeps the upper thread between the tension disks.