Rule for patchwork graduated in inch. Dimensions: 4 x 8 INCH (10.16 cm x 20.32 cm). Right and left -wing and resistant left -handed guaranteing a safe trace of the rotary knife. Precise marqual by computerized printing at the laser on the back of the rule. For supplies, bias, equilateral triangle, hexagons, etc. Included angles of 30 °, 45 ° and 60 °.