Ring Size
A measurement that indicates the circumference of jewellery , as well as smart rings, also known as ring size.
Instruments for measuring
An analogic sizing ring stick
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 the ring already installed.
Ring sticks are instruments that are used to determine the size of a ring, and typically, they are made from plastic, delrin, wood, aluminium, or of various materials. You can use digital ring sticks for exact measurements.
Measuring systems
International standard
ISO 853:2016 defines standard sizes for rings in relation to the inner diameter of the ring in millimetres. ISO sizes are commonly used in Austria and France, Germany (Belgium), France, Germany.

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