Ring Size
The ring's size is a measurement that denotes the circumference or sometimes the diameter of the smart rings as well as jewelry rings.
Instruments for measuring
A stick analogic to sizing
Ring sizes can be measured physically through a paper, plastic or a ring sizer made of metal (as an indicator) or simply by measuring the diameter of the ring that already fits.
Ring sticks are instruments used to determine the size of a ring. They typically, they are made from plastic, delrin, wood aluminum, or different materials. For exact measurements, digital ringsticks could be used.
Measurement systems
International standard
ISO 19865:2016 defines standard ring sizes as the inner circumference measured in millimetres. ISO sizes are widely used in Austria and France, Germany (Belgium), France, Germany.

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