Cuff compound microscope objectives
This microscope comes with six objectives.
When viewing opaque specimens, a silvered speculum, or Lieberkuhn, was used for reflected light illumination. The reflector was attached to a cylinder that slid over the downtube of the microscope body. The top of the cylinder was to be set at one of these six positions, corresponding to the particular objective used.

The reflected light apparatus is missing from this microscope.

Lieberkuhn position

2

3

4

5

6