Achromatic Microscope Target 40X High Magnification 20.2mm RMS Standard Thread Black 195 Feature:1. Brighter and brighter lens: the lens after coating bring high transmittance, high refractive index, provide a brighter and clearer image2. Protective device: the spring safety device can automatically bounce back when encountering the glass case during observation to protect the lens from crushing the sample3. Durable Brass: Brass material with excellent workmanship, corrosion-resistant and not easy to fall, exquisite and durable, the coating is chrome plated with accurate materials4. Universal screw interface: the screw interface size is the international standard RMS size, which can be used by 95% of professional biological microscopes on the market, very practical5. 40X Magnification: It is a 40X high magnification target, helps you a lot in studying, working or research, useful, helpful and convenientSpecification:Item Type: Achromatic Microscope Target Model: 40/0.65 Material: BrassApplication: Microscope AccessoriesInterface Size: Approx. 20.2mm/0.8in (International Standard RMS Size)Magnification: 40X Numerical Hole Diameter: 0.65mm Glass Case Suitable Thickness: 0.17mm Microscope Suitable Length of Mechanical Tube: Approx. 160mm/6.3in Distance Working Distance: Approx. 0.53mm/0.02inCommon Rail Distance: Approx. 195mm/7.68inParfocal Distance: Approx. 45mm/1.77inSpring: Yes (Auto Rebound)Package List:1 x Cover1 x Storage BoxHow To Use:1. Can be used when connected to a microscope.2. To facilitate observation, it is recommended to start observing at low magnification. It is more difficult to adjust the high magnification than with the low magnification. According to the characteristics of the observed sample, not all slices are suitable for observation under high magnification.