Microscope Slides & Cover Slip. May not match the actual item listed. This listing is for Model # BE80205. Bering Optics 5x Catadioptric Goggle/Monocular Lens, Black, 3.2in D x 3.8in L BE80205. Bering Optics BE80205: 5x Catadioptric Goggle/Monocular Lens, Black, 3.2in D x 3.8in L. Features of Bering Optics 5x Catadioptric Goggle/Monocular Lens. Field of vision: 8 degrees. Range of focus: 10m to infinity. Bering Optics 5x Catadioptric Goggle/Monocular Lens. At OpticsPlanet, we pride ourselves on top-notch brand name products at some of the lowest prices on the internet! ...