Compass Set Maped No.421 black, 4-piece — max circle Ø 340 mm, beam length 160 mm

Maped No.421 is a 4-piece compass set in black designed for drawing and technical geometry. The set supports a maximum circle diameter of 340 mm and a beam/compass length of 160 mm. It contains the essential compass components required for constructing precise arcs and circles, making it appropriate for school work, drafting and technical drawing tasks.

Advantages

The Maped No.421 compass set offers measured control for circle and arc drawing with a compact beam length of 160 mm and the ability to produce circles up to 340 mm in diameter. Its four-piece configuration provides the basic interchangeable parts commonly needed for classroom and drafting use. The black finish reduces visual distractions while working on paper and the set is lightweight for easy transport and storage.

Suitable for

• School mathematics and geometry exercises
• Technical drawing and basic drafting
• Art and design sketches requiring precise circles
• Hobby projects and DIY templates

When it may not be suitable

This compass set is intended for general educational and basic technical use; it may not meet the precision or durability requirements of professional engineering or advanced CAD-related drafting where specialized or higher-precision instruments are required. Users who need extremely large circles beyond the stated maximum diameter or heavy-duty metal construction should consider professional-grade alternatives.

Key specifications

• Configuration: 4-piece compass set
• Color: black
• Maximum circle diameter: 340 mm
• Beam/compass length: 160 mm
• Intended use: drawing, geometry, technical drawing

How to use

Assemble the compass components according to the included parts so that the pencil or lead is secured opposite the pivot point. Set the desired radius by adjusting the distance between the pivot and the pencil to half the intended circle diameter, up to the maximum supported 340 mm. Anchor the pivot point on the drawing surface and rotate the compass steadily to draw an even circle or arc. For technical accuracy, work on a stable flat surface and ensure the lead or pencil is sharp and correctly seated.

What to consider before purchase

• Confirm that the maximum circle diameter (340 mm) and beam length (160 mm) meet your project requirements
• Assess whether a 4-piece basic set provides the precision and durability you need for long-term or professional use
• Consider the material and finish (black) for visibility on your drawing surface and handling preferences

Usage recommendations

Use a fine, well-sharpened pencil or technical lead for cleaner lines and replace worn parts if accuracy decreases. Store the set in a protective case to avoid bending the beam or damaging the pivot point.