This multi ruler is a convenient and portable tool! When fully extended, it measures 30 cm (11.8 inches) long. However, when it's not in use it easily folds in half, thus becoming compact and easy to stow in a pencil case. The transparent body makes it easy to see lines and shapes underneath. Additionally, small holes are placed every 1 cm, making it convenient for you to mark important points in your work. This ruler also doubles as a protractor—the rotator circle has degree markings to measure angles, and the ruler arms stop in place every 15° when extending.
Because this folds in half, it fits nicely in my new pencil case! I bought it
for origami. It's calibrated in cm, so it works with origami paper. The tiny
holes let me mark the paper if needed. It also locks in place at 30. 60 and 90
degrees, which also comes in handy for some folds without landmarks. It's a
well-made and handy tool!