"Oberhouser" microscope

The tube of this microscope is supported on a device that extends from the pillar and has the eyepiece and lens at each end. The pillar is hexagonal. The lenses comprise a sequence of rings that are attached to each other and fit into the lower end of the tube. The stage is unusual in being rectangular. It does not have any clips but does have a central hole. The tube bears the manufacturer's inscription: "Schiek in Berlin. No. 303." Coarse focusing is achieved by manually moving the tube, while fine focusing is done by turning a screw below the stage to move it vertically. The mirror is located inside the lower tube, which has an opening at the front and can be tilted using a side screw.

Famed microscope maker Friedrich Wilhelm Schiek (1790–1870) founded his own workshop in Berlin in 1837. One of his many creations was a drum-type microscope using an Oberhauser model, as in this example.