The sensitivity of the Spin Echo Resolved Grazing Incidence Scattering (SERGIS) to scattering geometry and sample specifications has been tested at OFFSPEC on gratings with rectangular profiles. This sensitivity has been accurately confirmed by dynamical theory calculations, with all parameters are set to their experimentally observed values. We propose to test the accuracy of SERGIS, combined with a dynamical theory calculation, in extracting profile information of well known samples, in this case gratings with different profiles (triangular, sinosoidal, trapezoidal). We are alsol interested in testing the effect of the scattering contrast by spin coating the gratings with mixtures of non-volatile hydrogenated and deuterated oils of different concentrations. This will simultaneously allow us to study the correlation between the free surface of the oil and that of the underlying grating.