PURPOSE: To stabilize the direction control of an aging operation and to prevent damages of a limit switch means and an object to be controlled.

CONSTITUTION: In an aging jig having drive means 11 to 15 to objects MD to be controlled, pairs of limit switches 21A, 21B,... 25A, 25B abutting on and switching on/off objects to be controlled, and a control means 10, on-time detection means for detecting the duration of an on-state of each limit switch are provided, and when one of a pair of limit switches is switched on, the inversion control of the operation direction of the object is carried out. When a time not less than a first fixed time is detected by the on-time detection means, the inversion control of the operation direction of the object is carried out, and further when the on-time not less than a second fixed time longer than the first one is detected, control is carried out so that the operation of the object is stopped.