HORYN Dental Loupes 2.5X-3.5X Adjustable Black Magnifier Lab Medical Magnification Binocular Magnifier

Working distance: 2.5X-600mm, 3.5X-350mm. particulars. 1. Galilean optical design, eliminate chromatic aberration, large field of view, long depth of field, high resolution, 2. Multi-coated lenses imported from Germany, aspherical objective lens design, full field of view imaging Clear, no distortion, 3. The lens adopts optical multi-layer coating process, anti-fog and anti-mold, optical transmission rate of 99.5%, How to use. 1. Wear the loupes, fasten the headband to wear themcomfortably and securely. 2. Adjust the interpupillary distance and working angle, turn on the light. 3. opproximately 30 to 45 degrees below a horizontal line. This will allow for the. user to look down into the optics while working, keeping an upright posture