How to measure the ring size?

Tools for measuring ring size: string (inelastic), ruler, pen, scissors.

The specific method is as follows:

1, the rope should be wound around the root of the finger twice, and the rope should be tight without discomfort to the finger.

2. Mark the same position of two circles of rope with a pen. The mark should not be too thick, so as not to affect the accuracy of measurement.

3. Straighten the rope and measure the length between the two marks with a ruler, which corresponds to the circumference of the ring.