Ring Size
Ring size refers to the measurement that is used to indicate the circumference (or sometimes the diameter) of jewellery rings and smart rings.
Tools for measuring
A stick analogous to the size of
Ring size can be determined physically by a paper, plastic or a ring sizer made of metal (as gauge) or by measuring the inner diameter of a ring that already fits.
Ring sticks are tools used to gauge the size of a ring, and generally made of delrin, plastic, wood and aluminium or multiple materials. It is possible to use digital ring sticks for exact measurements.
Measurement System
International standard
ISO 19865:2016 defines standard ring sizes in relation to the inner circumference of the ring 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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