• Triangular Prism Shape:
  
  The 3D triangular scale design allows for multiple measurement
  
  surfaces, making it versatile for both simple drawing and more complex
  
  art projects.
• High-Quality Material:
  
  Typically made from durable, transparent acrylic or plastic, which
  
  often has light-refracting properties that can create a "rainbow" effect
  
  in sunlight.
• Measurement Range: This specific model features a 20cm scale, though 15cm variants are also common in this style.
• Student-Friendly: Designed with primary students in mind, it is lightweight (often around 20g) and easy to handle for small hands