Compass Set Maped No.308, 3-piece, black — max circle Ø 300 mm, beam length 130 mm

The Maped Compass Set No.308 is a 3-piece drawing compass kit in black, designed for technical drawing and school use. It allows drawing circles up to a maximum diameter of 300 mm with a beam length of 130 mm. The set includes interchangeable attachments for pencil or lead, a stable joint and a fine adjustment mechanism to produce precise circles and arcs for diagrams, geometry exercises and drafting tasks.

Advantages

The compass set provides stable performance through a firm hinge and a fine adjustment that helps control radius changes accurately. Interchangeable tips support both graphite lead and standard pencils, making the set versatile for classroom use, sketching and technical drawings. Its compact design and three-piece configuration make it simple to store and transport while maintaining reliable alignment for repeated measurements.

Suitable for

• School geometry lessons and student drawing exercises
• Technical and engineering sketches requiring circles and arcs
• Art and design tasks involving precise circular shapes
• Home projects and hobby model making where accurate radii are needed

When it may not be suitable

This compass set is intended for manual drawing and is not suitable for cutting, heavy-duty industrial use, or creating extremely large circles beyond the specified maximum diameter. Users who need digital plotting, CNC-level precision or circles larger than 300 mm should consider alternative tools.

Key specifications

• Maximum circle diameter: 300 mm
• Beam length: 130 mm
• Number of pieces in set: 3
• Color: black
• Interchangeable attachments: pencil and lead compatible
• Adjustment: fine adjustment mechanism and stable joint

How to use

Secure the compass point at the desired center and adjust the beam to the required radius using the fine adjustment to reach precise measurements. Attach a pencil or lead insert depending on the drawing medium. Hold the top of the compass lightly while rotating the arm smoothly around the fixed point to draw consistent circles or arcs. For repeatable sizes, use the fine adjustment scale and check alignment before each use.

What to consider before purchase

• Required maximum circle size (up to 300 mm)
• Compatibility with pencils or lead refills you plan to use
• Need for fine-adjustment control versus basic compass movement
• Whether a more heavy-duty or larger instrument is needed for professional drafting

Usage recommendations

For best results, use a sharp pencil or a fresh lead insert and check the hinge tightness periodically. Store the set in a protective case to prevent misalignment of the point and the drawing tip. When drawing on delicate paper, apply light, even pressure and complete circles in a single smooth motion to minimize tearing or smudging.