1,Microscope observation instument,Sliding Binocular Head, at 45 Rotatable 2,Objective: Achromatic DIN 4X,10X,40X(S ... the allocation of the microscope.Outfit:1Viewing Head : Sliding Binocular Head, at 45° Rotatable2Objective: Achromatic DIN 4X,10X,40X(S),100X ... head: It can adjust interpupillary distance and visibility, and 45°inclined(sliding style)or30°inclined(Compensation free),in order to observe ...