:: This handy little ring sizer is very easy to use, and comes with a clear set of instructions on how to accurately determine your ring size.
:: It measures in whole and half ring sizes from US 1 to 19.
:: Simply slide the end through the 'buckle', and tighten over your finger for a comfortable fit. Ensure you can slide it back over your knuckle comfortably. Read your ring size as indicated by the arrow. Easy!