Feature: 1. High‑quality industrial microscope camera C‑mount lens with stable performance. 2. The magnification of the objective lens on the display screen is 0.7‑4.5 times 3. Practical accessories, easy to install, suitable for industrial microscope cameras. 4. Adjustable zoom C-mount lens can provide clear observation and improve work efficiency. 5. Using high‑quality materials, it is durable and can be used for a long time. Specification: Item Type: Microscope Lens Material: Metal Color: As shown in the picture Model: KP-Z6145 Magnification (21.5 display): 63.71X-409X Field of View (CCD 1/3in): 0.8mm-6.86mm Eyepiece: 1X Objective Lens: 0.7X-4.5X continuously adjustable Auxiliary Objective Lens: 1X Optical Magnification: 0.7X-4.5X Working Distance: 90mm / 3.54in Product Tube Length: 255mm / 10.04in Lens Installation Diameter: 50mm / 1.97in How to Use: Get the product, first look at the lens parameters, install it on the corresponding device, adjust the parameters, plug in the power supply, and then you can observe and measure. . Package List: 1 x Coaxial Lens1 x Point Light Source1 x Power Adapter2 x Screwdriver Tool1 x Instruction Manual Note: 1. Please allow 1‑2in 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.