Package Dimensions:5.63 x 2.24 x 1.42 inches Item Weight:2.82 ounces ASIN:B0BRN1G6YB Item model number:Garosach4zyg0tkv Date First Available:January 4, 2023 Manufacturer:Garosa Product Description Specification: Item Type: Objective Lens Model: 100/1.25 Material: Brass Use: Microscope accessories Interface Size: Approx. 20.2mm / 0.8in (international standard RMS size) Magnification: 100X Numerical Aperture: 1.25mm Cover Glass Applicable Thickness: 0.17mm Microscope Applicable Mechanical Tube Length: Approx. 160mm / 6.3in Working Distance: 0.13mm Impregnation Medium: Cedar Oil Spring: Yes (automatic rebound) Common Rail Distance: Approx. 195mm / 7.7in Parfocal Distance: Approx. 45mm / 1.8in How to Use 1. Can be used after connecting with the microscope. 2. In order to facilitate observation, it is recommended to start observation at low magnification. It is 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. Package List 1 x Objective Lens 1 x Storage Box​