According to the size of the mainland, you can wear ring no. 15 finger circumference is 5.5 cm, and the finger circumference of the 20th ring is 6 cm.
The size of rings has different standards in different countries and regions.
1, China and Hongkong dimensions.
Ring 14 diameter 17.7mm, circumference 55.5 mm.
20 ring diameter 19.4mm, circumference 61mm.
2. Chinese mainland size
Ring 14 diameter 17.7mm, circumference 55.5 mm.
20 ring diameter 19.4mm, circumference 61mm.
It is suggested to go to the counter and ask the staff to help measure it and try it on, which is more accurate.
Extended data:
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.
Hand inches are expressed in millimeters and numbers. According to the international standard ISO 8653: 1986 (China district), the minimum hand size is 39. 1mm, and the diameter is 12.5mm, which is set to NO. 1; The maximum hand inch has a circumference of 69.7mm and a diameter of 22.2mm, and is set to No.27, with 27 numbers. Among them, 1 to 5 belongs to children's hand inches, and adults' hand inches are between 6 and 27. 12 is the most common adult female. 18 is the most common adult male. These two numbers are followed by the number 3, which is the most common number of hands.
The number of hands is divided according to the circumference and diameter of the inner ring, and the conversion formula of circumference and diameter is: D=C/π.
Where: d is the diameter of the circle, mm;
C-circumference, mm;
π-π。
There are regional differences in the size of hands in the world. Due to the different characteristics and habits of different countries and regions, the methods and standards for marking hand inches are not consistent. Although there are international standards to follow in China, there are also phenomena of nonstandard use and inconsistent ring sizes. Therefore, whether you know your hand code or not, you must confirm with the merchant before buying a ring.
How to measure hand inch
Measuring hand inches refers to measuring the circumference of the finger part of the ring to determine the number of hand inches. The general method of measuring hand inches is as follows:
1. Wear the ring directly: borrow someone else's ring or your own ring, find the ring that suits you best, measure its inner ring diameter or inner ring circumference, and compare it with the ring hand-inch comparison table to confirm your hand-inch.
2. Measuring with ring measuring ring: ring measuring ring is a professional tool for measuring hand inch, which can be determined by trying on experience.
3. Wrap the finger with cotton thread or paper, determine the length, and then compare it with the loop hand-inch comparison table.
The first two methods are the most scientific and accurate methods for measuring hand inch, and there are often errors in measuring with soft tools such as cotton thread.
When buying a ring, you must choose the most suitable size so that it is comfortable to wear. If you look at the hand-inch comparison table, you will find that there are two or three numbers in1mm. Maybe you can't see the difference with the naked eye, but the fingers you wear every day will feel different. Therefore, players should be as accurate as possible, and pay attention to the following points:
The first is 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.
Secondly, it depends on the position: usually the finger root of the ring is measured, but experienced professionals point out that some people's knuckles are thicker than the finger root. 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.
References:
Baidu encyclopedia-ring hand inch