This rectangle patchwork rule of 6.5 "x 12.5" (16.51 cm x 31.75 cm) includes black and white markings easy to read printed in 1 "marked grids by 1/8" increments and 1 /4 ". Use easy -to -read digital benchmarks, black figures (printed on white dots) and the sides of the rule of 1/4" to cut whole thumbs up. 1/4 "printed by two adjacent edges to help reduce sewing margins. Use the patented turn -a -round function - designated by the easy -to -read digital white numbers (printed on black dots) and the 1/2 "grip sides - to add the sewing margin of 1/2". Exclusive coating keeps the fabric during the cut when the pressure is applied. The rule includes 30 °; 45 °; and 60 ° angle. Horizontal and vertical white lines are printed on the rectangle so that the center of the rule is easily recognizable.