A probe includes an arm region extending in the back and forth direction, and a tip region extending downward from the front end portion of the arm region. The tip region has a pedestal portion integrally continuous to a lower edge portion at the front end side of the arm region and having an underside inclined to an imaginary axis extending in the vertical direction; and a contact portion projected from the underside of the pedestal portion and having a tip orthogonal to an imaginary axis. Thus, the position of the tip can be accurately determined.