30CM Triangular scale ruler

Convenience of multi-faceted switching: The triangular prism structure allows scales of different proportions to be independently distributed on three faces, avoiding confusion. When drawing, you only need to rotate the ruler to quickly switch to the required proportion without rummaging through repeatedly.

Clarity of scales: The scale lines on each face are fine and uniform (with a minimum precision of usually 1 mm). The numerical labels and scale lines have a sharp contrast (such as white text on a black background or metallic-colored scales), ensuring accurate reading even at small proportions.

Anti-slip and stability: Some models feature fine textures on the edges of the faces or a frosted finish on the bottom, making them less likely to slip when placed on the desktop and ensuring stability during measuring and drawing lines.