Triangle Ruler BIC 60° 21 cm – plastic 60-degree set square for drafting and measuring

BIC Triangle Ruler 60° 21 cm is a plastic set square designed for accurate drafting and everyday measuring. The tool features a 60-degree angle and a 21 cm hypotenuse, providing a stable straightedge for drawing precise lines and transferring angles. Its rigid plastic construction keeps edges true while remaining lightweight and easy to position on paper, making it suitable for classroom tasks, technical sketches and general measuring.

Advantages

The triangular shape with a fixed 60° angle ensures consistent angular measurement and repeatable line work. Smooth, straight edges reduce pencil or pen skipping for cleaner lines. The 21 cm length offers a balance between reach and handling comfort for use on standard drawing sheets and school notebooks. Durable plastic resists warping under normal use and is simple to clean.

Suitable for

• Technical drawing and geometry exercises
• School assignments and classroom use
• Architectural and design sketching
• Measuring and marking straight lines on paper
• Hobby drawing, model layouts and crafts

Key specifications

• Material: rigid plastic
• Angle: 60 degrees
• Hypotenuse length: 21 cm
• Edges: straight, smooth
• Weight: lightweight for handheld use

How to use

Place the triangle ruler on the drawing surface so the desired edge aligns with the starting point. Hold the ruler firmly with one hand to prevent slipping and draw along the edge with a pencil or pen to create straight lines. For angled lines, align the appropriate leg to a baseline or reference point and trace the 60° edge. When measuring, use the hypotenuse as a guide to estimate length up to 21 cm, or combine with a straight ruler for extended measurements.

Usage recommendations

Store the set square flat or in a pencil case to avoid pressure that could deform the plastic. Use a fine mechanical pencil or a well-sharpened pencil for the cleanest lines. Clean with a soft cloth and mild detergent if needed; avoid exposure to high heat or prolonged sun to preserve rigidity.