50-120 Square 12" x 20" Ruler: This L-shaped ruler, made from durable aluminum, is perfect for precise measurements in sewing, quilting, and craft projects. With a 12-inch short arm and a 20-inch long arm, it ensures accurate right-angle measurements and is ideal for transferring measurements from human figures to flat patterns. It's an essential tool for any sewing or crafting enthusiast, offering versatility and durability for professional-quality results.