According to the American ring size standard, the corresponding circumference of the ring No. 6 is 52mm and the diameter is 16.4mm.
1, strip (string) measurement method
(1) Preparation materials: a piece of A4 paper, pen, scale.
(2) Measurement steps:
3. Mark the overlap with a pen.
Finally, lay the paper flat and measure the distance between two points with a scale, that is, the finger circumference of the finger.
Because the flesh of the finger has a certain elasticity, it is best to tighten the paper or string around the circle to avoid being too loose. If you want to use thin rope, choose non-elastic, so that the error will be smaller. This measurement method will have a certain error, it is recommended to measure several times, take the middle value of the scale to reduce the error.
2, ring inner diameter measurement method
If you have worn a ring before, you can draw the inner diameter of the previous ring on the paper and measure it with a scale to check the size table. It should be noted that the pen should be vertical to the paper, and try to choose a pen without edges and corners, otherwise it is easy to appear errors.
3, size rod measurement method
When buying a ring, if you go to a jewelry store and want to measure your finger size, the clerk will usually take out a ring size stick to measure it. This is a ring size stick specially used to measure the hand size, with a series of rings with different scale sizes, put a suitable ring on a finger to be measured, and then remove the ring on the ring stick, compare the value. This is the measurement with the least error.