How much time do you use a ruler a day? It stays still for a long time throughout its life. This is our suggestion how the ruler can be used when it's idle. Ladder Ruler is not only a functional ruler but also an elaborate miniature of a ladder. You can lean the Ladder Ruler against a wall or display on your desk just like real ladder. The Ladder Ruler adds a little fun to your work space both during in use and out of use.