The inner diameter of the Chow Tai Fook No. 13 ring is 1.65 centimeters. Chow Tai Fook is a ring brand from Hong Kong, China, using the Hong Kong standard ring size codes. According to the ring size chart on the official website of Chow Tai Fook, the inner diameter of its Chow Tai Fook 13 ring is 1.65 centimeters, and the corresponding finger circumference is 5.67 centimeters.
Chow Tai Fook Official Size Chart
How to calculate the size of the ring
The size of a ring is determined by the circumference or diameter of the finger. There are different ring size comparison tables in different regions, and the corresponding ring size can be found based on the measured value. Therefore, there is no need to calculate, only the accurate value needs to be measured.
The measurement of finger size is affected by temperature, especially in summer and winter, when blood vessels are prone to thermal expansion and contraction. If measuring in winter, it is recommended to choose a measurement that is about half a size larger than the actual measurement. If measuring in summer, the measurement value can be taken, and it is generally more accurate to measure in the evening of spring and autumn.