3 4 5 Holes Microscope Converter Revolving Nosepiece Objective Lens Adapter

Biological Microscope Accessories Revolving Nosepiece Microscope Lens Exchanger

8PCS RMS 20mm Plastic Objective Lens Dust Cover for Biological Microscope

Biological Microscope Objective Converter Revolving Objective Lens Adapter

8PCS Plastic Standard Thread Objective Lens Dust Cover for Biological Microscope

WF5X Wide Field 20mm Biological Microscope Eyepiece Lens Mounting 23.2mm

3/4/5 Hole Microscope Objective Nosepiece RMS 20.2mm for 185/195 Microscope