Once you’ve marked the string or floss, use the ruler or tape measure to find out the length of the marked piece. Take your pen or marker and mark the place where the string overlaps.Ĭonverting the measurement to a ring size.Wrap the measuring tool (string or floss) around the base of your finger.You can get to the correct ring size using a simple piece of string or dental floss. Step-by-step guide to measuring with string or floss
