The portable multi ruler is a versatile and convenient tool designed for on-the-go use. Measuring 30 cm (11.8 inches) when fully extended, it easily folds in half for compact storage in a pen case or backpack. Its transparent body ensures visibility of the surface beneath, facilitating precise alignment.

Beyond its standard measuring function, this multi ruler serves as a protractor and compass. The circular swivel joint between the ruler's arms is marked from 0° to 180° in 15° increments, providing angular versatility. The ruler securely snaps into place at each interval. Each arm features small holes at 1 cm intervals, perfectly accommodating the tip of a mechanical pencil. These holes enable users to create evenly spaced dots along a line or pivot one arm while holding the other in place to draw arcs with precision. In summary, this portable multi ruler offers a compact and multifunctional solution for various measuring and drawing needs.