To provide a teaching pin in which a scanning needle at a tip end can be freely pivoted in any right/left and upward/downward direction, accurate scanning of track can be carried out and a deformation, a damage, etc., are not generated in the scanning needle even if it is used for a long time.

The scanning needle 2 is attached to a tip end of a pin body 1 through a joint member 3 having flexibility. More specifically, the joint member 3 is a cylindrical coil spring and the pin body 1 and the scanning needle 2 are threaded and fixed to the cylindrical coil spring, respectively.