Before you begin, please make sure to use a ring with a smooth profile and no raised details.
Have a credit card — or a card of the same format — and a ring in the size you want to hand.
请参照下方银行卡示意图,校准比例:其长度应与信用卡长度(86毫米)一致。
请将屏幕缩放恢复至100%,以确保准确校准。
Place your ring on the circle and adjust the slider until it matches the inside of the ring. If your size falls between two sizes, or if you are unsure, we recommend choosing the larger of the two.
Chaumet accepts no responsibility for any errors made.