1This auxiliary objective has a magnification of 10X, which can effectively expand the field of view. 2Perfect microscope accessories, exquisite workman, can be widely used in metallurgical microscope. 3The wide viewing angle enhances the viewing experience and makes the image clearer and brighter. 4Using high-quality aluminum alloy, durable and wear-resistant, can be used for a long time. 5Light weight, small size, easy to carry, working distance is 20.2mm, can be directly installed. Item Type: Objective Lens Material: Aluminum Alloy Color: As shown in the picture Model: KP-10X Magnification: PL10X Numerical Aperture: 0.25 Working Distance: 20.2mm / 0.80in How to Use: Get the product, first look at the lens parameters, install it on the corresponding device, and then perform observation and measurement. 1 x Objective Lens 1 x Installation Diagram