Figure 4. 4.1, Motorized Stage III in working position. The two stepping motors on either side of the stage are driven either via a PC or independently by an extra controller box. They allow for precise positioning of single specimens under a microscope. Due to its compactness, Stage III is portable and can be applied in external micropaleontological collections or museums. 4.2, Close-up of Stage III. 4.3, Detail showing gears of Stage III. The minimized geometry is illustrated for optimum usage under a binocular microscope; a tilting range from -90° to +90° can be attained, which is ideal for 3D-imaging of a microfossil under incident light.