Package Dimensions:4.96 x 2.24 x 1.38 inches Item Weight:2.82 ounces ASIN:B0BRN18CV1 Item model number:Garosa4b3qx0e6ho Date First Available:January 4, 2023 Manufacturer:Garosa Product Description Specification: Item Type: AchromaticObjective Model: 60/0.85 Material: Brass Use: Microscope Accessories Interface Size: Approx. 20.2mm / 0.80in (International Standard RMS Size) Magnification: 60X Numerical Aperture: Approx. 0.85mm / 0.03in Cover Glass Applicable Thickness: Approx. 0.17mm / 0.007in Microscope Applicable Mechanical Tube Length: Approx. 160mm / 6.30in Working Distance: Approx. 0.53mm / 0.02in Common Rail Distance: Approx. 195mm / 7.68in Parfocal Distance: Approx. 45mm / 1.77in Spring: Yes (Automatic Rebound) Package List: 1 x Achromatic Objective 1 x Storage Box How to Use: Can be used after connecting with the microscope. In order to facilitate observation, recommended to start observation at low magnification, more difficult to adjust at high magnification than at low magnification. According to the characteristics of the observed specimen, not all slices are suitable for observation under high magnification.