Precision Drafting Tools: 7-Piece Geometry Compass Set for Engineers Artists ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? High-Quality Compass Set This professional compass package includes 2 precision compasses designed for accuracy and versatility. The set features an extension beam, interchangeable attachments, and a slip handle adaptable for pens, pencils, stylus, or markers. Perfect for: math, geometry, art, drafting, and drawing. Create perfect circles up to 20 inches in diameter. Product Features Precision spring bowhead and center wheel to prevent unintentional leg movements Packaged in a clear, reusable box for easy storage and portability Durable metal construction for long-lasting use Adjustable sizes, with the largest creating circles up to 20 inches Customer Reviews Average Ratings: ????????? 4.3 out of 5 stars (3,651 reviews) ?????????? 4.6 out of 5 stars (702 reviews) ????????? 4.4 out of 5 stars (1,712 reviews) Pricing Availability Product Price Size Circle Diameter Refills Included Mr. Pen Compass 1 $12.99 6.5" Up to 20" Yes Additional Compasses $9.95 6.5" Up to 18" Yes Add to Cart Model: Geometry Set Unit Quantity: 7 pcs Type: Geometry Set Color: Multi-Color Gender: Boys Girls Style: Modern Unit Type: oz