Leica DM Microscope Condenser Phase Annulus Light Ring PH1-S70, PH2-S23, PH3-S1

27mm Phase Contrast PH3 Ring for Leitz Microscope Retrofit Compatible

Leica Microscope PH1 Phase Ring Retrofit Compatible

Leica Microscope 513553 Phase Ring 3/55

Leica Leitz Microscope 1S1 0S23 Phase Ring for Condenser Slider

Phase Contrast Set 27mm Diameter Compatible w/ LEICA Microscope

Leica DM Microscope Condenser Large Phase Annulus Light Ring PH2 S70 & PH3 S23

Leica DM Microscope Condenser Phase Annulus Light Ring PH1-S70, PH2-S23, PH3-S1