27mm Phase Contrast PH3 Ring for Leitz Microscope Retrofit Compatible

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

Phase Contrast Set 27mm Diameter Compatible w/ LEICA Microscope

Microscope 32mm Set of 8 Annuli + Darkfield Center Stop - Very Interesting Set!!

Microscope Phase Contrast Rings 32mm Diameter

27mm Microscope Linear Polarizing Filter+ 1/4 Lambda Wave Plate forLeitz Leica

Leica Leitz Microscope 3S1 Phase Ring for Condenser

Leica Leitz Microscope 1S1-UCL Phase Ring for Condenser