The article presents the preliminary results concerning the use of miniature magnetic linear encoders for the measurement of displacements at small strains in triaxial soil tests. Presented are: the main principle of operation of this type of sensors, their advantages, and how they have been implemented in a standard triaxial test stand to the existing equipment. Finally, the test results obtained for a soil sample are used to highlight the difference in results obtained with the new sensors compared to linear variable differential transformer transducers.