Contents: 1 x 18cm Metric Triangular Ruler. 1 x 30cm Metric Triangular Ruler Metric Style: Includes 1 x 18cm Metric Triangular Ruler. 18cm and 30cm, with matte black finish to prevent glare, corrosion resistant and durable, not easy to break. No sharp edges, won't hurt your hand. Premium quality: The square chevron is made of high quality aluminum alloy, high hardness, strong toughness, not easy to rust. Wide Use: This carpenter's square can be used as a protractor, miter, plotter saw guide, framing square and ruler, ideal for all construction and remodeling projects. Easy to mark your cutting lines: this triangular ruler uses a thicker edge design, can be used directly with the saw against the square for cross cuts or angled cuts using the engraved scale, allowing you to mark quickly and accurately your cutting lines on your cords. Size: 18cm Metric Triangular Ruler: 18 x 18cm, 30cm Metric Triangular Ruler: 30 x 30cm