Students and artists, this Charles Leonard compass is exactly what you need for perfect circles every time! The ball bearing mechanism is super smooth and creates accurate circles up to 12 inches in diameter - that's seriously large for a handheld compass. The positive pencil lock keeps your drawing tool securely in place so you don't get those wobbly, uneven circles that cheaper compasses often produce. It comes complete with a pencil and both inch and centimeter guides on the ruler, making it perfect for math class, technical drawing, or any art project requiring precise circles. The metal construction feels substantial in your hand and will last way longer than those flimsy plastic compasses that break after a few uses. Whether you're a student tackling geometry homework, an artist working on detailed drawings, or a DIYer needing perfect circles for projects, this compass delivers professional results without the professional price tag. The quality is immediately noticeable - this isn't some dollar store compass that'll let you down when you need it most. It's one of those tools that just works perfectly every time you use it!