The microscope is supported by a pillar bolted to a lead-filled horseshoe base.
The focusing rack is machined into the support pillar. The top mechanism (A) moves the microscope body. The lower mechanism (B) moves the stage.
Reverse side of stage (15.8x11.6cm). The tiny hole at the arrow is for the locating pin (right) at the top of the stage mounting post. Stage sample opening is 2.5cm diameter.
Stage mount post with locating pin.