A multifunctional sliding gauge for easy marking! Can be set at 1/8" (3.2cm) increments. This versatile sliding gauge can be used for quilting or sewing to accurately measure and mark. 1/4"(6.4mm), 1/8" (3.2mm), 3/8" (9.5mm) and 5/8" (15.9mm) wide seam allowances