How to test the inner diameter of the ring?
method one:
When measuring, put 4 long fingers (except the thumb) to the "tiger's mouth", pinch it firmly, and then measure with the measuring tool. For example, it is exactly 45mm. Then, adding 2~3mm on this basis is suitable for you Circled the mouth. This specification will have a certain pain when worn, please use hand sanitizer and other lubrication. Some people like to wear a little looser, they can choose a larger circle mouth.
Method Two:
When choosing a jade bracelet, you should be able to put the jade bracelet into the 4 long fingers (except the thumb) to the "tiger's mouth" and feel a little tighter, then remove the jade bracelet and measure the inner diameter, for example, it just happens to be 55 mm, then this size is suitable for your ring mouth. Some people like to wear a little looser. When choosing, choose a circle with a size of 1 to 2 mm, so that it can be easily put on and removed. Some people are accustomed to wearing smaller jade bracelets, or don't plan to take them off again. In this way, the size can be reduced by 1 to 2 millimeters. Generally, when choosing, you should try it on first. When trying it on, put some detergent or soapy water on your hands and ask someone for help. Put the jade bracelet into your wrist with a little force.
Method three:
Put five fingers together, ask someone to help measure the circumference of the thickest part of your hand in the thinnest state with a soft rope, then divide by 3.14, and add 1~2mm to get the inner diameter of your bracelet. For example: the length you measured is 170mm, then 170/3.141~2=55~56mm.
Note: The above three methods have their own shortcomings, you'd better try each method as much as possible, test several times and then find the average. This is more accurate
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