The white metal body tube is screwed at four points to the brown enameled, cast iron support. Note the side arm for the stage control.
Side view showing the attachment of the cast metal support.
The upright support is bolted to the triangular cast iron base.
Each foot has a cork insert for stability.
The gimbaled mirror is attached to a post that descends from the stage. It is parabolic on one side and flat on the other. dia=4cm.