In an inspection procedure of a completed product of an automatic transmission main body at a unit factory, a control system transmits a control signal to an actuator to receive characteristic data output in response to operation of the automatic transmission main body according to the control signal. When the disk drive group is not started, after the lapse of a second set time shorter than the first set time, the circuit signal for turning ON a power supply circuit corresponding to the next disk drive group is outputted to start the next disk drive group. The housing comprises a first pathway containing said surgical needle, and a second evacuation pathway providing evacuation means for the needle assembly. The dental stone catalyst is engaged onto the internal surface of the impression.