To measure the aircraft model attitude in the spin time, a method based on stereo vision is presented. We get the attitudes from a set of man-made signs on the surface of the model. From a pair of figures of the signs, their disparities are computed out. The design of the signs and the computation of the attitudes are presented in this paper. The man-made signs have good identifiability and the anchor points are accurate. Finally, the data of experiments to determine the aircraft model attitude are provided. Through the experiments, it can be concluded that the process of the computing is satisfactory, achieving high robustness. The measurement shows that the method discussed is useful for the experiments in the vertical wind tunnel.