The microscope body is supported by this leather-covered cardboard base. The sample stage and slide spring clip (arrow) and set in the center of the base. The base dia=8.0cm.
The back of the base shows the insertion point for the sample slot (arrow) and pivot control for the mirror.
The sample is inserted from the rear and rests on the wooden stage. The microscope body is pressed into the round support and focused by friction.
The illuminating mirror is set on a pivot that is controlled by projecting pins on either side of the support base. The mirror has a plane surface and is set into a circular brass base. Dia=3.3cm.