Ring Size
Ring size is the measurement used to denote the circumference (or sometimes the diameter) of rings made of jewelry and rings that are smart.
Instruments for measuring
A similar sizing stick to rings
Ring size can be determined using a plastic, paper or a metal ring sizer (as an indicator) or by measuring the inner diameter of rings that is already fitted.
The ring sticks can be used to measure the diameter of rings' inner edges. They are generally made out of delrin, plastic, wood, but may also comprise different substances. You can use digital ring sticks to measure precise measurements.
Measurement System
International standard
ISO 8653 - 2016 defines standards for sizes of rings. It measures the circumference of the band in millimetres. The ISO sizes are applicable in Austria (France, Germany, Belgium and Scandinavia (Norway. Sweden. Denmark. Finland. Iceland.)

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