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Published on Jan 11, 2011
http://www.sailrite.com/Professional-... The Professional Long Arm - 20.5 inch Zigzag Sewing Machine. 4-Point Stitch (3-Step Stitch): Instead of a standard 2-point zigzag stitch this Sailrite Professional Long Arm Sewing Machine is fitted with a cam making the zigzag a 4-point stitch. This is useful for spinnakers and one design sailmaking where it is desirable to reduce production time by stitching each seam only once. Complete in a Stand with the MC-SCR Power System.