The modules of translation with connecting arm are used on 2 axis & 3 axis spectrometers. They ensure a connection without play of the various axis on rotations 2 & #952;. The distance between the axis can be adjusted by freeing 2 collets immobilizing the connecting arm. The displacement of the whole stage is carried out with air pad systems associated with MB series base modules. MT series xxx-B80 is proposed with a single arm while MT series xxx-2B80 is available with parallel twin arms.