Chastity device discussions and reviews discussion

I want to take my own measurements to ensure the next gadget I buy fits me well. Obviously, keeping things locked in is key, but when it’s a comfortable fit—snug and secure—it makes long-term wear much easier and less painful. I’m not referring to pain from lack of release; I mean physical discomfort caused by the device itself. That said, after reviewing articles on how best to measure up, they recommend getting several base rings in slightly different sizes. Try one on for a few days and nights continuously; if there’s any issue, switch to the next size and repeat the process again for a bit longer. Once you find one that stays comfortably snug without being too tight, that is your perfect size. I really want to avoid going into a sex shop, as my reading suggests you can purchase rings at either a sex store or a hardware outlet. Has anyone else tried this method of measuring? If so, which hardware stores carry something identical to cockrings?