Vixen 176 mm Tube Rings
Tube Rings are sold in pairs and have 1/4"-20 threaded holes on top and bottom. There are two style of Vixen Tube rings: a "hinge-style" and "slip-on" style. An optional Tube Ring Accessory plate can be fit across the top of the rings for additional mounting options and greater stability.
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Does vixen 176mm tube ring fit on my outside diameter 7" tube? 7" is equal to 177.8mm . I don't want to crush my tube while screwing it down . I know 1.8 mm difference is small but I need to ask the leeway of the tube rings. Daryl
Given how thin the castings are on the Vixen rings, they will not work properly with a 177.8mm diameter tube. Flexing the rings could cause cracks over time. You would be better to look at a set of Parallax 7" rings (http://www.optcorp.com/parallax-standa