A method of establishing specific electrode positions by providing a multi-point probe and a test sample, said multi-point probe having a probe body and a plurality of probe arms extending parallel from said body and each including one electrode, said plurality of probe arms and electrodes, respectively, being greater than four, said test sample defining a surface, said method comprising the steps of: positioning said multi-point probe such that said electrodes are in contact with said surface of said test sample, determining a distance between two of said electrodes of said multi-point probe, preferably the two outermost electrodes of said multi-point probe, establishing a resistance model representative of said test sample, said resistance model having said specific electrode positions of said multi-point probe relative to said surface of said test sample included as unknown parameters, said resistance model representing said test sample as a finite sheet and/or a multilayered sheet, performing at least four different resistance measurements, each of said resistance measurement including: selecting four different electrodes of said plurality of electrodes, dividing said four different electrodes into a first pair of electrodes and a second pair of electrodes, applying a current propagating through said test sample between said first pair of electrodes, detecting an voltage induced between said second pair of electrodes, and establishing a measured resistance based on a ratio of said voltage and said current, establishing for each of said different resistance measurement a corresponding predicted resistance based on said resistance model, establishing a set of differences constituting the difference between each of said predicted resistance and its corresponding measured resistance, and deriving said specific electrode positions of said multi-point probe on said surface of said test sample by using said distance and performing a data fit by minimizing an error function constituting the sum of said set of differences. positioning said multi-point probe such that said electrodes are in contact with said surface of said test sample, determining a distance between two of said electrodes of said multi-point probe, preferably the two outermost electrodes of said multi-point probe, establishing a resistance model representative of said test sample, said resistance model having said specific electrode positions of said multi-point probe relative to said surface of said test sample included as unknown parameters, said resistance model representing said test sample as a finite sheet and/or a multilayered sheet, performing at least four different resistance measurements, each of said resistance measurement including: selecting four different electrodes of said plurality of electrodes, dividing said four different electrodes into a first pair of electrodes and a second pair of electrodes, applying a current propagating through said test sample between said first pair of electrodes, detecting an voltage induced between said second pair of electrodes, and establishing a measured resistance based on a ratio of said voltage and said current, selecting four different electrodes of said plurality of electrodes, dividing said four different electrodes into a first pair of electrodes and a second pair of electrodes, applying a current propagating through said test sample between said first pair of electrodes, detecting an voltage induced between said second pair of electrodes, and establishing a measured resistance based on a ratio of said voltage and said current, establishing for each of said different resistance measurement a corresponding predicted resistance based on said resistance model, establishing a set of differences constituting the difference between each of said predicted resistance and its corresponding measured resistance, and deriving said specific electrode positions of said multi-point probe on said surface of said test sample by using said distance and performing a data fit by minimizing an error function constituting the sum of said set of differences.