Fine focus is via a fine-pitch thread and spring mechanism that moves the microscope body support.
The compass joint at the top of the double pillars allows the microscope to be tilted.
Crude holes in the base were used for mounting the microscope to a surface.
The circular stage is recessed to accommodate a glass insert (missing). Two stage clips hold the microscope slide.
The central hole in the stage is tapered to center the glass filter.