Abstract: Pressure measurement was made on a group of cuboids and cylinders with streamlined nose in a low speed wind tunnel. Each group consists models of different sizes with blockage ratio of 4.4%, 6%, 12% and 17.5% respectively.During testing the pressure on the wall of the tunnel was measured. The pressure results corrected by wall pressure sigature matrix method are presented. The results show that although the flow characteristics around the two groups of models are completely different, the pressure coefficients of different models corrected by the method tend to agree with each other.It has been proved that pressure at the stagnation point on the model is not effected by the wall and the wall blockage interference can not be eliminated by applying dynamic pres,ure correction for the pressure measurement.