Leitz Wetzlar 569238 Microscope Objective Lens, NPL 50x/0.65DF Dark Field

Leitz Wetzlar 569197 Infinity/ 0 NPL FLUOTAR 50X/0.85 DF Microscope Objective

Leitz Microscope Objective Lens NPL DF 50X/0.75 ∞/0 Dark Field

Leitz Wetzlar Germany Microscope Pol 50X 50/0.85 170/0.17 Microscope Objective

Leitz Leica Wetzlar Germany NPL 50x/0.75 DF Microscope Objective

Leitz Wetzlar NPL Fluotar 50x/0.85 DF Microscope Objective

Leitz NPL Df 50x 0.85 Microscope Objective Lens Pol

Leitz Wetzlar Germany Microscope Objective Lens NPL 50x / 0.85 Eyepiece