FORSUN 24 Inch (60cm) Flexible Curve Ruler Flex Design Rule, Ideal for use: Engineering Drawing, Design Graphics, Garment Design, All Kinds of Painting Draw a perfectly contoured curve without measuringGreat for measuring curved seams and designing curved quilt border patterns metric and imperial double-sided use, soft and pliable measurements can be any shape. Sided ruler is provided with fine ink tank, easy to use. Size:24 Inch (60cm)