Quilter's Select Rulers are the perfect tool for measuring fabrics for quilting and sewing. This ruler is ideal for cutting half-square, quarter-square triangle units and basic squares up to 4.5". Clearly marked with 45° and 60° angle measurements. These rulers feature a unique clear non-slip coating that keeps your ruler in place on any material for precision and safety while cutting. Each ruler has clear, easy to read grid lines, with markings at 0.25”, 0.5” and 1” that make for quick, easy cuts every time.