31 Jul 4X 10X 20X 40X 100X Achromatic Objective Lens for Biological Microscope 185mm
185 Achromatic Pure Copper objective Lens 4X 10X 20X 40X 60X 100X RMS 20.2mm for Biological Microscope Conjugate Distance 185 mm. Magnification: 4X, 10X, 20X, 40X(S), 60X(S), 100X(S，Oil). Suit microscope: Biological microscope....