round robin test was conducted to compare the influence of different measuring systems on the modulus of elasticity, tensile strength and Poisson's ratio. A tensile test was carried out on highdensity fibreboard made of pine wood using eight setups, which varied in extensometer type, clamping jaws, and upper limit of the load sensor. Not all extensometers were suitable for measuring Poisson's ratio and an increase in tensile strength with increasing sensitivity of the force sensor was observed. The influence of the setup was greatest on the modulus of elasticity. This result is relevant for all applications in which precise material parameters are required, such as the simulation of components under load.