The system allows the creation of thin sections at the desired thinning thickness. It is composed of: • Variable speed cleaner LS2 or LS3V (0-150 rpm); • Thinner: device with micrometric adjustment, for the direct grip of the sample or histological/petrographic slide by means of vacuum; • vacuum bell for sample impregnation (necessary for friable and porous materials); • single-stage or two-stage vacuum pump; • diabase thousandths plan with comparator. This system, allowing micrometric adjustment of the thickness to be removed, is useful both for obtaining samples with plano-parallel faces with a thickness defined within a few microns and for thinning a sample to the desired height for stratigraphic analysis.