Firstly, take a note with the width about 3cm and run a circle at the bottom of the figure
you want to wear the ring and then measure the length of the circle of the paper with ruler.
According to the following attached table, you will know which size you should wear. Of course, there
must be some error, but the accuracy can reach 90%:
Size-------Diameter (mm) --------Circumference (mm) #6 14 45 #7 14.5 46 #8 15.1 47.5 #9 15.3 48 #10 15.6 50.5 #11 16.1 52 #12 16.9 53 #13 17 53.5 #14 17.7 55.5 #15 18 56.5 #16 18.2 57 #17 18.3 57.5 #18 18.5 58 #19 18.8 59 #20 19.4 61 #21 19.7 62 #22 20.2 63.5 #23 20.4 64 #24 21 66
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