Features: 1.[Versatile Usage]: The triangle ruler set is made of transparent plastic and combines various functionalities such as grading ruler and curve ruler, providing you with convenience. 2.[For Various People]: The plastic triangle rulers are ideal tool for designers, tailors, students, beginners, sailors, pattern makers, etc, ensuring the measurement is precise, saving time and effort. 3.[Wide Application]: The transparent triangle rulers are essential for pattern making, garment construction, sewing, embroidery, etc, can meet your different measurement needs. 4.[Multiple Functions]: The triangle ruler set includes features such as 1:3, 1:4, 1:5 ratios, as well as an angle measuring tool, suitable for hand drawing, pattern cutting, grading, etc. 5.[Clear and High Accuracy]: The triangle ruler set provides clear and high accuracy measurements, you can rely on it for precise and consistent results, helps you achieve professional quality cuts and designs. specification:Item Type: 3220 Triangle Ruler Material: Plastic Size: Approx. 21 x 11 x 23cm / 8.3 x 4.3 x 9.1in : 5pcs Purpose: Household Range of Application: Most Scenes PackageList:5 x TriangleRuler