The number of hands is divided according to the circumference and diameter of the inner ring. 12 is the most common adult female. The most common adult male is 18.
The conversion formula of perimeter and diameter is D=C/π.
Where: d is the diameter of the circle, in millimeters; C-perimeter, in millimeters; π-π。
If the finger width is 17.5- 18mm, 17 or 18 is the most suitable ring.
The finger width, that is, the diameter and the ring size are compared as follows:
Hand inch is a technical term in the jewelry industry, which refers to the size of the ring. Based on the diameter and circumference of the inner ring, it is divided into different turns, which is convenient for production and wearing.
The size of the hand depends on the thickness of the root of the finger, so it can be simply understood as "the size of the finger", which determines the number of rings to wear. They are the same, and they are the most suitable and comfortable to wear.
Extended data:
Matters needing attention in measuring hand inch:
1, time.
The human body expands with heat and contracts with cold, and the fingers will change in the four seasons and one day. In a day, noon is the hottest and most swollen time of the day, which is not suitable for measurement, and it is cold in the morning and evening. Therefore, the normal time of measurement should be chosen in the morning and evening as far as possible.
2. location.
Usually measure the finger roots of rings, but experienced professionals point out that some people's knuckles are thicker than the finger roots. When measuring hand inches, the so-called "bamboo-shaped" hand should measure the size of finger joints.
As we know, wearing a ring means putting it on your fingertips and sliding it over your knuckles. If the size of the hand is determined according to the usual finger roots, the ring will get stuck in the knuckles and cannot be worn. Therefore, such a finger should measure the size of the knuckles so that the ring can pass smoothly.
Of course, the measured finger size of the ring will not be thicker, and it will be looser to wear, but it will not fall off. If you want to make the ring more suitable, you might as well wrap some cotton thread around it.
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