The Golden Ruler is a handy wallet-sized device, designed based on the golden rule. Measure and draft lengths, angles, and perfect circles with this versatile tool that fits right in your back pocket! Perfect for designers, architects, inventors, doodlers, and lovers of shiny things. (Imperial Measurements, 3.25" wide x 2" tall) This product is made from solid, bead-blasted brass, giving it a matte and non-reflective surface. It is precision cut and laser engraved to with distinct surface markings. This thick metal card is designed for use in your wallet, pocket, or between pages in your notebook. The Golden Ruler is the perfect companion for sketching and drawing, and makes for a beautiful and simple desktop accessory. This solid brass ruler is designed to patina over time and with use. The natural oils from your hand will wear with the ruler, making it a piece that's sure to grow with you, etched with the memories of past drawings.