Feature Highlights: 1. Precision Math Compass – Designed for both mathematical geometry and art drawing. Its secure-grip design prevents slipping while you work. 2. Accurate Adjustments – The fine-tuning knob allows you to make precise geometric constructions. Once locked, the compass stays firmly in place—even while writing. 3. Fully Adjustable Size – Draw circles from as small as 1/8 inch up to 10 inches in diameter. Perfect for all kinds of circle-drawing tasks. 4. All-Metal Build – Made from solid, high-quality metal for long-lasting durability. Includes three extra leads that are easy to replace whenever needed. 5. Stable & Secure – Features a spring bow head and thumbwheel to prevent accidental slipping, giving you steady, reliable performance every time. Product Details: This precision compass is built for accuracy and ease. Made entirely of metal, it’s sturdy enough to handle daily use in school, work, or creative projects. The adjustable knob lets you set the exact size you need, and once locked, it won’t budge. The anti-slip design keeps your circles clean and precise. Plus, with included spare leads and screws, you’re set for the long run. Ideal for geometry, technical drawing, drafting, and arts. Specifications: - Color: Black - Material: Metal - Maximum Circle Diameter: 10 inches - Minimum Circle Diameter: 1/8 inch - Package Includes: 6 x Precision Compass, 12 x Spare Screws, 18 x Spare Lead (Only the items listed above are included. Please note that slight color variations may occur due to screen settings, and measurements may vary by +/- 1–3 cm.)