Practical rule for a precise and effective cut for patchwork projects. Dimensions: 8 x 8 INCH (20.32 cm x 20.32 cm). Right and left -wing and resistant left -handed guaranteeing a safe tracing of the rotary knife. Precise marqual by computerized printing at the laser in laser Back of the rule. Marking of angles 30 °, 45 ° and 60 °. Employment for supplies, biases, equilateral triangle, hexagons, etc.