Unique Style: A compass and protractor in one, designed as a portable writing tool, this tool lets you easily draw high precision arcs and patterns. Multifunctional: The drawing tool is simple in design, easy to operate, practical and multi-functional, can open wine bottles, and can be used for protractors, compasses, rulers, etc. PREMIUM MATERIALS: Eye-catching ruler metal appearance and carefully polished stainless steel body, long service life, laser machined scale, clear reading, not easy to wear and deform. Magnetic Scroll Base: Normographer of drawing tools to make drawing more accurate and user-friendly, it is a very portable and multi-functional stationery accessory. Wide Application: It is an innovative pocket-sized drawing tool for designers, artists, architects, cartographer, mandala enthusiasts, illustrators, tattoo artists, students and creative professionals. Note: The data is all Manual measurements, please allow 1-3cm error, due to the light and display difference, there will be some color difference, depending on the physical object received.