B01GZWK8M6 Product Name : Square Ruler Material : Metal Measure Range : Max:0-30cm / 0-12 inches,Min:0-20cm / 0-8 inches; Ruler Size : 30.5 x 20.5 x 0.2cm / 12" x 8.07" x 0.08" (L * W * Max.T ) Color : Black; Weight : 222g