Metal Ruler Cork Liner - This set includes 4 metal rulers, measuring 12 or 18 inches. The cork liner prevents ink from entering under the stainless steel ruler. Hanging holes easy to store the ruler after use. Clear and accurate scale - The marks are etched and filled with paint, accurate inch and metric measurements are clear, the numbers and letters on the page can be clearly seen, and accurate marks are used for accurate measurements on any object. Rounded and Right Angle Edges - A 6-inch metal ruler is a right angle edge that is accurately measured from the zero mark. A 12-inch and 18-inch metal ruler is a rounded edge, and there are styles available to use in different situations. Discarded Fragile Plastic Rulers - Made of high-quality stainless steel, they prevent rust and , and are . Say goodbye to debris on wooden rulers or discoloration marks on fragile plastic rulers. The metal ruler is flexible enough to measure curved surfaces without cracking. Widely used - These metal rulers are useful measuring tools for artists, designers, architects, engineers, student , dryers, architects, DIY, and others. They are suitable for classrooms, schools, offices, homes, drawing tools, and drawing kits. They can be used for canvas, glass, leather, wood, wallpaper, and more. Three different sizes of rulers meet your needs. size:45cm, 30cm Material: stainless steel colour: silvery Package Contents: 4 x rulers (12+18 Inch) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.