Infinity-Corrected Plan Achromatic POL Polarizing Microscope Objective Lens Set (Spring) 4X 10X 20X 40X 60X with Black Finish | Boli Optics Microscope Store
3D-printed adapter & 4x microscope objective offers impressive macro photos for $25: Digital Photography Review
Nikon #140656 40X [40/0.65] 160/0.17 Microscope Objective, Japan | eBay
Nikon H-III Power Microscope Lens | For Sale | Labx Ad 4395621
NEW RMS Thread to M25 Adapter for Nikon Leica Microscope Objective Flat|rms thread adapter|rms adapteradapter microscope - AliExpress
Objective Working Distance | Nikon's MicroscopyU
Nikon 4x DL Phase Contrast Objective – Microscope Central
Objectives and Nosepieces | Stereo Microscope Accessories | Accessories | Nikon Microscope Products | Nikon Instruments Inc.
Anatomy of the Microscope - Objectives: Specifications and Identification | Labcompare.com