Feature:1. Highquality industrial microscope camera Cmount lens with stable performance.2. The magnification of the objective lens on the display screen is 0.74.5 times3. 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 highquality materials, it is durable and can be used for a long time.Specification:Item Type: Microscope LensMaterial: MetalColor: As shown in the pictureModel: KP-Z6145Magnification (21.5 display): 63.71X-409XField of View (CCD 1/3in): 0.8mm-6.86mmEyepiece: 1XObjective Lens: 0.7X-4.5X continuously adjustableAuxiliary Objective Lens: 1XOptical Magnification: 0.7X-4.5XWorking Distance: 90mm / 3.54inProduct Tube Length: 255mm / 10.04inLens Installation Diameter: 50mm / 1.97inHow 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 ManualNote:1. Please allow 1& 8209;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.