N- Diagonal Seam Tape

Diagonal Seam Tape is placed on the front plate of your sewing machine to act as a guide while you are sewing diagonal seams. The red thread in the center is aligned with the needle of the machine, the blue thread on both sides is 1/4 inch from the center of the line, representing a 1/4 inch seam edge; just put the tape with the red thread in front of the needle as a needle Tape is a nice solution for sewing straight diagonal seams without having to mark any lines.