1X/2X Achromatic Bio-microscope Objective Lens Infinity Standard RMS 20.2 Thread

Standard RMS Thread Achromatic Objective Lens Accessory Silver Copper RMS Lens

Biological Microscope Plan Achromatic Objective Lens 4X-100X RMS Thread 195mm

Standard RMS Thread Achromatic Objective Lens with Precision Copper Core

195 1X 2X RMS Achromatic Infinity Objective Lens for Biological Microscope

Ken-A-Vision 4X Achromatic Microscope Objective Lens (BLK) - In Canister

195 Achromatic Microscope Objective Lens 4X RMS 20.2mm Thread for Biological Lab

Ken-A-Vision 4X Achromatic Microscope Objective Lens (BLK) W/ SLVR Ring