Kearing 12" Pattern Grading Ruler: Clear, Flexible, and Durable Imperial Grading Tool - Ideal for Sewing, Quilting, and Pattern Making. This high-quality ruler features a zero centering scale, making it easy to measure and adjust patterns with precision. The sandwich line printing ensures that the numbers won't rub off, providing long-lasting usability. Its transparent design allows for accurate positioning and marking, making it an essential tool for any sewing or quilting project. Whether you're a professional designer or a DIY enthusiast, this ruler is a must-have for creating perfectly sized patterns every time.