I just measured with a micrometer, and my wedding ring has developed an eccentricity of 0.3303 (24.4mm x 23.03mm). Which is rather odd, because I always take it off when I'm doing the kind of things that would tend to crush small loops of soft metal.
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one of these days i'll come up with something interesting enough to post, i promise! (it would help if i were more writing-oriented to begin with, i suppose...)