Compass Bertus Cyrkiel Easy — drawing compass for drafting and geometry

Bertus Cyrkiel Easy — drawing compass for drafting and geometry is a precision instrument for constructing circles and arcs in schoolwork, technical drawing and hobby projects. The compass features an adjustable radius range, a stable hinge mechanism for consistent angles and a holder compatible with standard pencils or leads to produce accurate, clean lines. Its compact design makes it suitable for carrying in a pencil case or workspace and for repeated classroom use.

Advantages

The compass offers reliable radius adjustment with fine control, enabling reproducible measurements and smooth circle drawing. A secure hinge maintains set positions to reduce slippage during use, while the pencil or lead holder gives a firm grip for precise line quality. The instrument’s lightweight construction balances stability and portability, and the simple mechanism supports quick setup and straightforward maintenance.

Suitable for

• School geometry lessons and exercises
• Technical and drafting sketches
• Hobby and craft projects requiring circular shapes
• Design studies and preparatory layout work

Key specifications

• Adjustable radius range suitable for small to medium circles
• Pencil or mechanical lead holder compatible with standard writing cores
• Stable hinge mechanism for consistent angle and radius retention
• Compact and lightweight form factor for portability
• Materials designed for regular classroom and hobby use

How to use

Place the compass point at the intended center of the circle and set the required radius by adjusting the legs until the pencil tip reaches the desired distance. Tighten the hinge or adjustment mechanism to secure the radius. Hold the top of the compass steady and rotate the pencil end smoothly around the central point to draw an even circle or arc. Replace or sharpen the pencil or lead as needed to maintain line clarity. Store the instrument in a case or pencil box to protect the point and pencil holder.

Usage recommendations

Use on a flat, stable surface and avoid applying excessive lateral force to prevent bending the legs or misaligning the hinge. For precise technical work, pair the compass with a sharpened mechanical lead or a well-sharpened pencil and verify the radius on a ruler before drawing. Keep the pivot point clean and dry, and loosen the adjustment slightly before long-term storage to preserve hinge tension.