Abstract: The objective of this current work is to design a z-axis translation for an earth sensor test facility in the Earth Lab, Laboratory for Electro-Optics System (LEOS), ISRO Bangalore. It is targeted to develop the best solution for the z-axis translation, taking into account the physical and material constraints as well as the operator’s safety and easy accessibility of the device. Nowadays there exist a set of z-axis translators that has been implemented on a limited number for testing equipments. The device developed in this thesis reveals a relatively new concept that is fitting space, safety and easy-access requirements of the test facility in the earth lab. To achieve the goals of this current work, I followed the project design methodology from specialized books that lead us to final concept which was submitted to structural analysis and that will be furthermore optimized. Careful consideration of functional and physical domains guided us to an effective solution to this design problem. This solution is viable from the point of view of the structural analysis.