Abstract
According to the previous report, the simulator by means of mixed reality technique was effective to acquire the skill of manual arc welding safely and efficiently. In order to improve training effect and cost performance of the simulator, it is necessary to investigate the influence of the performance of visual display and auditory display devices upon the motion of trainees. In this report, as the first step of the investigation, the motions in actual operation and virtual operation with the simulator are compared quantitatively.