60 Day 100% money back guarantee. This Correct Tokyo optical zoom tube is marked 0.75X, 1X, 2X, 3X, 4X, and 4.5X and measures approximately 106 mm long. It may be suitable for integration into a compatible microscope camera, industrial inspection, or machine-vision optical setup. The black metal housing has visible scuffs, scratches, finish wear, small oxidation spots around several fasteners, and a numbered inventory sticker. Dust is visible on the exposed optical surfaces. No testing was performed. Zoom movement, optical performance, focus behavior, image quality, internal cleanliness, thread specifications, and compatibility are not confirmed. The glass was not examined under magnification for fine scratches, haze, fungus, separation, or coating damage. Only the pictured zoom lens assembly is included; no camera, microscope, adapters, caps, stand, illumination, or documentation are included. Please compare the photographs, markings, connection points, and 106 mm length with the intended application before ordering. Keyword Block: correct tokyo, 0.75x-4.5x zoom, microscope camera tube, machine vision optics, industrial inspection, variable magnification, optical assembly