مسطرة ديلي المثلثية (30cm) متعددة القياسات أداة للرسم والرياضيات مثالية للمهام المدرسية والحرفية

The ruler features multiple edge scales labeled for fast switching between common measurement scales. The markings use high-contrast lines for easy reading. Simply choose the edge that matches the scale you need and read the values directly from the edge.

Key accuracy features include multi-scale edges for quick conversions, crisp high-contrast graduations, a stable triangular profile that resists rolling and lifts ink from the surface, a straight and true rigid body, precision tips for exact line starts, and a durable finish that wipes clean.

The ruler is 30 cm in length with a triangular cross-section. It uses a durable plastic body and a simple finish. To care for it, wipe with a soft cloth after use and avoid harsh solvents; store flat to maintain edge alignment.

Yes, it is designed for classroom use. It is made from durable plastic with smooth, non-sharp edges and a clean finish, suitable for students and school environments.

Use it to draw straight lines at precise scales, quickly convert measurements between scales, layout proportional dimensions for math problems, and create parallel guides or aligned elements in crafts and design work.

Wipe the edge with a soft cloth after use to remove graphite or ink. Avoid solvents that could degrade the finish. Store it flat to prevent warping and keep the edges aligned for accurate readings.

The triangular profile provides stability and resists rolling in either orientation, making it comfortable for both right- and left-handed users. The high-contrast graduations remain legible from multiple angles.

Two close alternatives on Fepy include: - Deli Triangular Scale Ruler 20 cm E8920: https://fepy.com/product/deli-triangular-scale-ruler-20cm-e8920 - Deli Triangular Scale Ruler 40 cm E8940: https://fepy.com/product/deli-triangular-scale-ruler-40cm-e8940

Choose this ruler when you need multiple scales in one tool, quick scale conversions, and stable drafting lines. If you only need simple measurements without scaling, a standard straight ruler may be sufficient.

Ideal for school tasks, architectural or engineering drafting, design work, math problem solving, and craft layouts where precise lines and easy scale changes are beneficial.

Step-by-step: 1) Place the ruler on the page with the 0 mark at your starting point. 2) Select the target scale edge you need. 3) Read or transfer measurements along that edge. 4) To draw, align your pencil tip with the starting point and slide along the chosen edge to guide the line. 5) After use, wipe clean and store flat to preserve accuracy.