Phase Inserts For American Optical Microscope - 12.5mm / 16mm Diameter.

Microscope Phase Contrast Rings 30mm Insertion Diameter

Microscope 32mm Set of Eight Rheinberg Center Stop Filters - Very Exciting Views

31mm Diameter Circular Oblique Illumination – COL - Microscope Filter Set

Microscope Darkfield Set 30mm Insertion Diameter

Microscope parts w/ Cooke 8mm NA 0.45 250mm

Microscope Darkfield Set For Older Leitz Microscopes - 55 Condenser or eq.

52mm - Quarter Wave Microscope Lambda Plate - See Specs