The Staedtler Compass Blistercard is a precision drafting tool designed for accurate circle drawing and geometry exercises in both educational and professional settings. Featuring sturdy metal legs and a safety-point needle to prevent accidents, this compass can create circles with diameters up to 300 mm. Its universal adapter allows the use of either the included half-length pencil or a standard hexagonal pencil, making it versatile and easy to use straight from the blister pack. Compact at approximately 124 mm in length and crafted with quality that Staedtler is known for, it offers reliable control and precision for students, hobbyists, and professionals alike.