CUTTING RULER WITHOUT AWRY

摘要

PURPOSE: The off dislocation prevention official person can prevent to grow distant of the blade composed through the person using magnet of magnet. CONSTITUTION: It off dislocation prevention official person. It constitutes with the form in which the scale unit of the official person is composed of the iron seen the magnetism. It accurately sticks to the scale of person if it is to the magnet in which for the knife scale part, the self-examination has and knife gets near and blade does not fall from person.