Designed for precision drafting and technical drawing, the STAEDTLER Comfort 551 Masterbow Precision Compass delivers exceptional accuracy for architects, engineers, designers, students, and technical illustrators. Its precision-set center wheel and spring-bow head provide smooth, controlled adjustments while minimizing flex-back for consistently accurate circles and arcs.
Constructed from solid metal with a durable nickel-plated matte finish, the Masterbow Compass is built for years of dependable use. Interchangeable lead and needle components extend its versatility, while the included spare leads and protective storage pouch make it ready for classroom, studio, or professional drafting environments.
Capable of drawing circles up to 265 mm (10.4") in diameter—or approximately 500 mm (19.7") with an extension bar (sold separately)—this precision compass is an essential tool for accurate geometric construction and technical illustration.
Features
- Professional precision compass
- Precision-set center wheel for fine adjustment
- Spring-bow head minimizes flex-back
- Solid metal construction
- Durable nickel-plated matte finish
- Hinged leg joint for smooth operation
- Interchangeable 4 mm lead holder
- Replaceable shouldered needle
- Includes spare leads and storage pouch
Specifications
- Brand: STAEDTLER
- Series: Comfort 551 Masterbow
- Construction: Solid metal
- Finish: Nickel-plated matte
- Length: 154 mm
- Maximum Circle Diameter: Approximately 265 mm (10.4")
- Maximum Circle Diameter with Extension Bar: Approximately 500 mm (19.7")
- Lead Holder: Interchangeable 4 mm shank
- Needle: Interchangeable shouldered needle
Ideal For
- Architectural drafting
- Engineering
- Technical drawing
- Mechanical drawing
- Geometry
- Mathematics
- Design
- CAD layout planning
- STEM education
- Professional drafting
Precision You Can Feel
The center adjustment wheel allows precise radius changes without disturbing the compass setting, while the spring-bow mechanism provides excellent stability for consistent, repeatable results.
Built for Professional Drafting
Manufactured from solid metal with replaceable components, the Comfort 551 Masterbow is designed for long-term accuracy and dependable performance in both educational and professional environments.
