Amazfit Helio Ring Sizing Kit

Amazfit Helio Ring size test setSet of three size Amazfit Helio Ring. Manufacturer provide finger circumference for all sizes. In production is now size 8, 10 and 12. Other sizes should be produced in future.3D print of test rings is great opportunity to test which size fit best for your fingers and buy the right one.Differences between theoretical and real diameterI maked theoretical models from finger circumference but when I ordered size 10, I figured out, that real diameter is different. Before returning it I measured real inner diameter and make new model of real size 10. Now I have size 12 so i measure real diameter too. It looks like real diameter is 1,1 mm smaller than theoretical. Unfortunately I don&#39;t have ring size 8 to measure, so its diameter is calculated like theoretical diameter-1,1 mm.SizeFinger circumferenceFinger diameterRing inner diameter860,3 mm19,2 mm18,1 mm*1066,0 mm21,0 mm19,9 mm1271,3 mm22,6 mm21,5 mm</stron