Easy to Use - The Channel Beam Bar For Alvin Beam Compass is a functional replacement part that allows the compass to draw circles up to 48 inches in diameter.

Precision Design - Spring-loaded thumbwheel on the top of each slide assembly allows for smooth and precise adjustments. Comes complete with interchangeable ruling pen, pencil, and divider legs.

Ideal for Students - Perfectly useful for all levels, whether for geometry class, drafting, architectural design, construction, or engineering.

Conveniently Packaged - Comes in a hard, see-through plastic case for portability and easy storage and transport.

Premium Quality - Made in Germany, each tool is constructed with heavy-duty materials and finish that can resist stains and tarnishing. Ideal for long-lasting use.