Achromatic Objective Brass 60X Microscope Objective For Biology Laboratory Interface 20.2mm Feature:1. Clearer images: This lens is coated with high light transmission, high refractive index, and brighter images2. Automatic rebound: spring protection device, automatically rebound when touching the glass case during observation, protect the lens from sample crushing3. Brass material: adopts high-quality material, careful workmanship, corrosion and fall protection, exquisite and durable, chrome plated for coating4. Application: the interface size is the international standard RMS size, it can be used by most professional biological microscopes on the market5. Basic Specifications: This lens has 60X magnification, 195mm common rail distance and 45mm parfocal distanceSpecification:Item Type: Achromatic TargetModel: 60/0.85Material: BrassApplication: Microscope AccessoriesInterface Size: Approx. 20.2mm/0.80in (International Standard RMS Size)Magnification: 60P Numerical Width: Approx. 0.85mm/0.03inGlass Case Suitable Thickness: Approx. 0.17mm/0.007inMicroscope Suitable Length of Mechanical Tube: Approx. 160mm/6.30inDistance Working Distance: Approx. 0.53mm/0.02inCommon Rail Distance: Approx. 195mm/7.68inParfocal Distance: Approx. 45mm/1.77inSpring: Yes (Auto Bounce)Package List:1 x Achromatic1 x Storage BoxHow to Use:Can be used when connected to a microscope. To facilitate observation, it is recommended to start observing at low magnification, which is more difficult to adjust at high magnification than at low magnification. According to the characteristics of the observed sample, not all slices are suitable for observation under high magnification.