Features: brand new and high quality Multi-functional tool as bookmark and ruler in stationery supplies for students. Brass or red copper manufacturing with high durability, 0.8mm/0.03" thickness, can be used for long for time use. Pure handmade, beautiful shape, simple design with clean lines and generous, good gloss. It can be used for any occasion, such as life, study, work, experiment, etc. A great gift for your best friend or teachers. Specifications: Product Name: Brass 30cm Ruler Material: H65 Brass Process: Stamping & Forming, Surface Fine Wire Drawing Size: Approx. 306x30 mm/12.05x1.18 inches Thickness: Approx. 1.5 mm/0.06 inch Package Includes: 1 Piece Ruler note: Brass has variability in color and luster, it will gradually oxidize as it is used, and the color and luster will change with oxidation, forming a characteristic of retro charm and full of age. Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you mind. Due to the difference between different monitors, the picture may not reflect the actual color of the item.