Features: 1.The scale is accurate and accurate, pure and transparent, and the data is clear. 2.All angles are mirrored vertically so that both left?handers and right?handers can use the ruler easily and effectively. 3.Double seam ruler connection design, more convenient to use, very practically. 4.Can be used to sew patterns, stitches, seam allowances, patch?work, measurement, drawing, cutting, etc. on clothes or fabrics. 5.Using high‑quality materials, strong and durable, has a long service life. specification:Item Type: Patch-Work Ruler Set : 5 x Patch-Work Ruler Material: Acrylic Purpose: Hand-made DIY sewing tools, multi-functional arc cutting Patch?work ruler, suitable for all kinds of sewing, patterns, sewing templates and handicrafts Shape: Double triangle, double five sides, double six sides, double circle, double square Size: Double Triangle: Length: Approx. 20.5cm / 8.1in Double Pentagon: Length: Approx. 22cm / 8.7in Double Hex: Length: Approx. 22cm / 8.7in Double Round Shape: Length: Approx. 22cm / 8.7in Double Square: Length: Approx. 22cm / 8.7in PackageList:5 x Patch-Work Ruler