Opens out to 6 x 24 inches. Folds down to 6 x 8 inches, for storage or transportation. Ideal for cutting fabric strips or squares directly from the bolt. Two tone markings ensure visibility on both dark and light fabrics. 30 degree, 45 degree and 60 degree angle lines make it easy to cut precise angles. Made of 2.4mm thick, premium quality clear acrylic for lasting durability. Lifetime warranty. Imperial measurements.