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90 degree Erecting Prism designed to fit 1.25""/31.7mm focusers and eyepieces.Designed to give a more comfortable viewing position, and to correct upside down images.
90 degree Erecting Prism designed to fit 1.25""/31.7mm focusers and eyepieces.Designed to give a more comfortable viewing position, and to correct upside down images.