Grader’s Set Square (Metric) – 40cm Pattern Drafting Ruler

The essential precision tool for professional pattern making, grading, and garment design.

Master your drafting with the Metric Grader’s Set Square, the gold standard for fashion designers, tailors, and students. Engineered for accuracy and speed, this multi-functional ruler replaces the need for multiple drafting heads, allowing you to draw perfect right angles, vertical lines, and bias angles in one fluid motion.

Whether you are grading up sizes, altering existing patterns, or drafting original couture from scratch, this durable acrylic square provides the clarity and precision required for high-end garment construction.

Why Choose the Grader’s Set Square?

• Ultimate Precision: Features a crisp 90-degree right angle and a 45-degree hypotenuse, essential for finding the true bias and ensuring perfect grainlines.
• Dual-Line Grading Spacing: Designed specifically for the industry, it includes engraved 5mm and 2.5mm spacing along the edges. This allows for lightning-fast seam allowance additions and professional grading without manual math.
• Crystal Clear Acrylic: Made from 3mm thick, durable transparent acrylic. The clear finish ensures your pattern markings are fully visible underneath for pinpoint accuracy.
• Versatile Design: Features internal cut-outs and a total length of 40cm, making it large enough for full-scale trouser and dress drafting while remaining easy to handle.

Technical Specifications:

• Material: 3mm Heavy-Duty Transparent Acrylic.
• Measurement System: Metric (cm/mm).
• Total Length: 40cm (Diagonal edge approx. 43.5cm).
• Engravings: 5mm and 2.5mm internal grading lines.
• Angles: 90° (Right angle) and 45° (Bias).

Pro Tip for Designers:

For the best results, use your Set Square alongside Spot & Cross Paper to align your vertical and horizontal axes perfectly. To maintain the crystal-clear finish, wipe occasionally with a soft, lint-free cloth.