Ring Size
The ring's size is a measurement that denotes the circumference or sometimes the diameter of smart rings and jewelry rings.
Instruments for measuring
An analogic sizing ring stick
Ring size can be determined by a paper, plastic or a metal ring sizer (as an example) or by measuring the diameter of a ring that is already fitted.
The ring sticks can be used to measure the rings' diameters inside. They are usually made from delrin, plastic or wood, and can also be made of different material. Digital ring sticks are utilized to make highly precise measurements.
Measuring systems
International standard
ISO 8653:2016 defines standard size rings by the inner circumference, measured in millimetres. 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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