Speaking of changing measurements, I almost forgot to mention. What with thinking about Boston, I pulled out my brass rat* last night and slipped it on. It fit. It hasn't fit the finger it was originally sized for for years.
I'm wearing it now.
*MIT class ring. Gold, therefore "brass"; invariably sports a beaver on the front, hence "rat". Mine is white gold -- a variation sometimes known as a "stainless steel rat".