Colorful Ruler for Measurement and Geometry

Here's a neat graphic showing an L-shaped ruler, often recognized as a set square. It has a cool light blue section with markings and a contrasting red base, all neatly outlined in brown. This handy tool is super useful for drawing straight lines, checking angles, and making accurate measurements in geometry, art projects, or any task needing precision.

ruler - set square - geometry - measurement - tool - drafting - lines - angles - illustration