
Convertible Compass for Geometry, Drafting, 5-Inch Circles
Meet the Mr. Pen Convertible Compass—built for precise, reliable circles in geometry, drafting, and technical drawing.
Why you’ll love it
- Precision + versatility: Designed for geometry work, drafting, and technical drawing tasks
- Durable metal frame: Strong build for steady control and long-lasting use
- Comfortable handling: Ergonomic features for stability and comfort for students and professionals
- Draws up to 5 inches: Creates circles up to 5" in diameter for math, art, and design applications
- Ready to keep going: Includes extra lead refills plus a sharpener for continuous, hassle-free use
- Consistent results: Adjustable locking mechanism helps maintain steady, repeatable circles
- Portable essential: Compact and easy to carry—great for classrooms, offices, or on-the-go projects
Original: $3.99
-70%$3.99
$1.20More Images







Convertible Compass for Geometry, Drafting, 5-Inch Circles
Meet the Mr. Pen Convertible Compass—built for precise, reliable circles in geometry, drafting, and technical drawing.
Why you’ll love it
- Precision + versatility: Designed for geometry work, drafting, and technical drawing tasks
- Durable metal frame: Strong build for steady control and long-lasting use
- Comfortable handling: Ergonomic features for stability and comfort for students and professionals
- Draws up to 5 inches: Creates circles up to 5" in diameter for math, art, and design applications
- Ready to keep going: Includes extra lead refills plus a sharpener for continuous, hassle-free use
- Consistent results: Adjustable locking mechanism helps maintain steady, repeatable circles
- Portable essential: Compact and easy to carry—great for classrooms, offices, or on-the-go projects
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Meet the Mr. Pen Convertible Compass—built for precise, reliable circles in geometry, drafting, and technical drawing.
Why you’ll love it
- Precision + versatility: Designed for geometry work, drafting, and technical drawing tasks
- Durable metal frame: Strong build for steady control and long-lasting use
- Comfortable handling: Ergonomic features for stability and comfort for students and professionals
- Draws up to 5 inches: Creates circles up to 5" in diameter for math, art, and design applications
- Ready to keep going: Includes extra lead refills plus a sharpener for continuous, hassle-free use
- Consistent results: Adjustable locking mechanism helps maintain steady, repeatable circles
- Portable essential: Compact and easy to carry—great for classrooms, offices, or on-the-go projects






















