Features 1、APPLICABLE OBJECTS: 180X zoom lens, adjustable magnification, suitable for VGA USB industrial video microscope camera. 2、HIGH DEFINITION IMAGE: High definition, high depth three dimensional image, the lens body zoom is flexible and comfortable, and easy to operate. 3、ZOOM AND MAGNIFICATION: Objective lens magnification power is 0.7‑4.5X (approximately 10‑180X on monitor), working distance is 125mm, zoom ratio is 6.5:1. 4、EASY INSTALLATION: C mount microscope camera lens, C mount design, easy to install on the microscope, easy to observe the internal structure of the object. 5、Sturdy IN USE: Selected high quality alloy materials, sturdy and sturdy, corrosion resistant, wear resistant, not easy to damage, and long service life. Specification Item Type: C Mount Lens Material: Alloy Purpose: Suitable for VGA USB industrial video microscope camera for electronic inspection, jewelry inspection, LCD, crystal inspection, etc. Working Distance: Approx. 125mm / 4.9in Zoom C Mount Lens: 0.5x C Mount Adapter Zoom Ratio: 6.5:1 Objective Lens Magnification Power: 0.7-4.5X (approximately 10-180X on a 22in monitor) Maximum Multiple Field of View: Approx. 2.8x1.5mm / 0.11x0.06in Minimum Multiples Field of View: Approx. 25x14mm / 0.98x0.55in Lens Length: Approx. 168mm / 6.6in Lens Diameter: Approx. 50mm / 2.0in Package List 1 x C Mount Lens