Stellarvue dual hinged rings for our 152 mm refractors. Used on our SV/SVX152 refractors, these rings work with 6" O.D. tubes. They are not sized for other brands telescopes. The rings have five 1/4-20 threaded holes top and bottom. This includes a center hole, two holes that are 1.5” apart and two holes that are 60 mm apart.
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Am designing and fabricating adapter so that the ring set will mate with my Televue NP127mm is refractor. See you at NEAF.