The line magnifier for embroidery work is the ideal supplement to the Prym magnet board, since it lets you enlarge embroidery or stitching pattern details very easily – it's even very simple to mark your work progress. The inserted red line is used as a ruler to guide you on the pattern while the two magnets on the left and right ensure that the ruler is securely held to the magnet board. The line magnifier is made of stable, transparent plastic and can be used on other magnet boards.