Ring Size
Ring size is the measurement that is used to indicate the circumference (or sometimes, the diameter) of rings that are made of jewels and rings that are smart.
Instruments for measuring
An analogic sizing stick for ring rings
You can determine the size of rings by using a metal, paper or plastic ring sizer (a gauge) or using the measurement of the inner diameter an existing ring fitted.
Ring sticks are devices to measure the inner dimensions of rings. They are made from wood, plastic aluminum, or any other material. To make precise measurement, digital ringsticks can be used.
Measuring systems
International standard
ISO 19865:2016 defines standard ring sizes as the circumference of the inner ring measured in millimeters. The ISO sizes are used to measure the circumference of a ring in Austria (France, Germany, Belgium and Scandinavia (Norway. Sweden. Denmark. Finland. Iceland.)

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