Feature: 1. Using high‑quality industrial optical glass, multi‑layer coating processing technology, durable to use. 2. High‑accuracy large aperture, clear and vivid images, high light transmittance, and clear picture quality. 3. Monocular microscope lens, support 0.7X-5.6X continuously adjustable, easy to use. 4. The magnification is 35X‑278X, and clear images can be obtained at different focusing distances. 5. It is convenient to install and disassemble, and does not affect the installation and use of other accessories. Specification: Item Type: Microscope Lens Material: Metal, Optical Glass Model: KP-7056TV1PO Magnification (21.5in Display): 35X-278X Field Of View (CCD2/3): 15.8-1.96mm/0.62-0.08in Eyepiece: 1X Objective: 0.7X-5.6X Continuously Adjustable Auxiliary Objective: 1X Optical Ratio: 0.7X-5.6X Working Distance: Approx. 100mm / 3.9in Product Length: Approx. 155mm / 6.1in Lens Installation Diameter: Approx. 50mm / 2.0in How to Use: Get the product, first look at the lens parameters, install it on the corresponding device, and then perform observation and measurement.. Package List: 1 x Microscope Lens1 x Installation Diagram Note: 1.Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.