Ring gages are used to evaluate the outside diameter of cylindrical workpieces. Ring gages are often used in pairs as go-no go gages. Rings with various forms, such as threads or splines are available.
Ring gages can be made with unilateral or bilateral tolerances. See Plug, Pin and Ring Gages.
![](http://toolnotes.com/wp-content/uploads/2021/02/Ring-Gage-1024x342.jpg)
Ring gages may be called setting rings or setting ring gage when a master ring gage is used to calibrate instruments designed to measure bore diameters.
References
“What Is the Point of a Setting Ring Gage? – Higher Precision.” Higher Precision, https://www.higherprecision.com/blog/what-is-the-point-of-a-setting-ring-gage. Accessed 26 Feb. 2021.
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