Unit of Measurement: The sewing machine ruler is designed with a centimeter/inch measurement unit, with the metric system as the unit.Durable: The tailor ruler set is made of high-quality plastic, durable, tough, wear-resistant and environmentally friendly.Built-in Scale: Fine lines, clear lines, high precision, not easy to wear, it is an ideal tool for manual cutting board production.Wide Range of Uses: The curve ruler is suitable for personal use, classroom use or other detailed works, such as clothing design, architecture, drawing templates, etc.Specification:Type: Sewing RulerMaterial: PlasticColor: As shownGrading Ruler Size:55*5cm/21.6*2.0inchNet weight: 270.0g/9.52ozPackage:1 * 6403 Arm Sleeve Ruler1 * 3231 Comma Curve Ruler1 * 3250 Multi-purpose Curve Ruler1 * Yardstick1 * Cutting Ruler1 * B-55 grading Ruler(55*5CM)1 * Sewing Roulette Spacer Wheel