Sensor diagnostics is an increasingly hot topic nowadays. It helps to improve their operational accuracy, analyze and evaluate their lifetime and monitor wear rates. A diagnostic laboratory has been constructed for force-measuring sensors with the ambition of future experiments. A current topic is the monitoring of the influence of deformation of progressive materials in the measurement and diagnostic process. The deformation and elasticity of these materials is evaluated by measuring the forces in the diagnostics laboratory. To perform the experiment, a specialized jig was made in which measurement segments of different materials were implemented. The main objective of the experiment is the expertise of the influence of elastic material in diagnostics. The expected logical negative factor of using flexible segments is the reduction of the measurable range due to the deformation of the flexible element. An expected important conclusion of the experiment is the increase of the sensitivity and especially the stability of the measurement. The aim of the expertise is to quantify the percentage values of the measurement deviations.