What's My Ring Size?

Materials Needed: - 诪讛 爪专讬讱
A piece of string or paper -聽 讞转讬讻转 讞讜讟 讗讜 谞讬讬专
A pen or marker - 注讟 讗讜 讟讜砖
A ruler - 住专讙诇 讗讜 诪讟专