Iris Diaphragm, Microscope Iris Adapter Aperture Adjustable Lens Optical Diaphragm for Microscope (SK25 with Bas)

Specification: Item Type:Iris Diaphragm SK25: Magnified Diameter: 1.5-25mm Material: Metal Outer Diameter :44mm Inner Diameter: 25mm Thickness :8mm 14 blades SK23 Outer Diameter: 37mm Minimum Aperture Diameter: ?1.5mm Maximum Aperture Diameter: ?23mm Material:Metal Thickness: 7.0mm 12 Blades SK12 Outer Diameter: 19.8mm Minimum Aperture: ?1mm Maximum Aperture: ?12mm Material: Metal Thickness: 5.0mm 10 Blades SK8 Outer Diameter: 14.8mm Minimum Aperture: ?0.8mm Maximum Aperture: ?8mm Material: Metal Thickness: 4.5mm 8 Blades SK6 Outer Diameter: 13.0mm Minimum Aperture: ?0.8mm Maximum Aperture: ?6mm Material: Metal Thickness: 6mm 8 Blades Package List: 1 x Diaphragm