The Ideas C3855 15x60cm patchwork ruler is the preferred large-format rectangular ruler for quilters to cut strips and align fabrics. Made of thick, transparent acrylic measuring 15 x 60 cm with wear-resistant markings, it features markings in centimeters, millimeters, and angles of 30º, 45º, and 60º. Its thickness allows the rotary cutter blade to rest securely on the side without damaging the ruler. The 15 cm width and 60 cm length cover the standard width of fabrics folded in half. It is the essential ruler for any patchwork and creative sewing project.