Abstract: In this study, we propose a new method for evaluation of the form deviation of the profiles and surfaces at the example of the compressor blades of gas turbine engine. The approach is based on separating the form and position deviation from the value of the total deviation of the nominal and the measured profile by using wavelet transformation of profiles coordinates and differences of profile normal angles. In the first stage of filter procedure the inclination normals vector and two-dimensional Haar wavelet transformation of the point coordinates array are used. In the second stage construction of the linear regression for the final filtration of form deviations is performed. The method increases precision of the results in comparison with traditional methods used by software for coordinate measurement.