... and total thickness.Unit contains a precise micro motion specimen feeding system which uses a micro computer, optical signal and stepper ... m,in 1μm increment 20~60μm,in 5μm increments 60~100μm,in 10μm ... m,in 2μm increments 20~50μm,in 5μm increments; 50~100μm,in 10μm ... 50μm increments;Specimen retraction: 0~95μm,in 5μm increments ;Specimen vertical stroke 70mmSpecimen horizontally stroke 25mmMax ...