Feature: 1. 0.7X‑5.6X continuous zoom lens, the magnification of the microscope can be adjusted, which is convenient for observing the image. 2. The monocular microscope lens can obtain clear images at different focusing distances. 3. Using superb technology, using high‑quality industrial optical glass, multi‑layer coating processing technology. 4. The high‑precision large aperture makes the observed image clear and lifelike, and the image quality is clear. 5. Installation and disassembly are simple, according to the installation drawing, only a few simple steps can be completed. Specification: Item Type: Microscope Lens Material: Metal Model: KP-7056TVOP7 Magnification (21.5-inch display): 32X-252X Field of View (CCD1/1.8): 15.8mm-1.96 mm Eyepiece: 0.75X Objective: 0.7X-5.6X continuously adjustable Auxiliary Objective: 1X Optical Ratio: 0.53X-4.2X Working Distance: Approx. 100mm / 3.9in Product Length: Approx. 155mm / 6.1in Lens Installation Diameter: Approx. 50mm / 2in How to use: Get the product, first look at the lens parameters, install it on the corresponding device, and then you can observe and measure. Package List: 1 x Microscope Lens1 x Instruction Diagram