Accessory frame
Aperture stop closed
DF Condenser
DF condenser in
Oblique stop
livebox
Nicols
Accessories fit in this mahogany frame.
Substage aperture diaphragm. L: Stop closed; R: Stop open
Darkfield condenser
DF Condenser in place below stage
DF Stop substage insert
Brass livebox
Nicol prisms. L: Polarizer; R: Analyzer