- Easily correct upside down and left-right reversed image: -This Diagonal correct upside down and left-right reversed image easily. -Allow you view things during daytime in correct position- Standard 1.25'' diameter: Fit for 1.25'' focuser and eyepiece;-Work with Refractor and catadioptric telescopes,not for Reflector telescope- High quality optical glass come with dust cover: Keep your lens clean and image clear and sharp,prolong life. - Wide 45 degree angle: You can view correct image from refractor telescope stand and just look down with a comfortable angle-This Diagonal prism could turn your refracting telescope into a scope that can be used to observe objects on earth with correct angle image. Package include:1 X Full metal 45-Degree Erecting Image Zenith Mirro2 X Dust cover
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