Geege 195 High Quality Microscope 20.2Mm Objective Parts 4X 10X 20X 40X 60X 100X

Black Achromatic Objective 195 High Quality Microscope Objective Lens RMS 20.2mm Objective Parts 4X 10X 20X 40X 60X 100X Function: 195 High Quality Microscope 20.2mm Objective Parts 4X 10X 20X 40X 60X 100X Features: Interfaz estándar RMS = 20 2mm For biological microscope Standard cover glass thickness 0.17mm Specification: Type: Microscope Achromatic Objective Lens Magnification: 4X/10X/20X(S)/40X(S)/60X(S)/100X(S + oil) Mount Size: 20.2mm Standard RMS thread Material: precision copper core Tube length: 160mm 4X: numerical aperture (NA) 0.1; working distance 18mm 10X: numerical aperture (NA) 0.25; working distance 7mm 20x (S): numerical aperture (NA) 0.4; working distance 0.55mm 40X(S): numerical aperture (NA) 0.65; working distance 0.53mm 60X (S): numerical aperture (NA) 0.85; working distance 0.18mm 100X (S + oil): numerical aperture (NA) 1.25; working distance 0.13mm Packing list: Objective lens*1