To solve a problem that most conventional marking operation is conducted by two people, one person holds a needle at a start point and another person extends an ink thread and sets an ink pot at a predetermined position, however, to conduct this by a person, the needle should be fixed in a self-sustaining manner.

By using the marking tool, it is possible to conduct the marking operation of a long span by a person by sticking the needle at the starting point and adhering the marking tool around which the ink thread is wound to a body so that the marking tool is fixed in the self-sustaining manner.