Detail of GB/T 11888-2014

Introduction of GB/T 11888-2014

Jewellery - Ring-size - Definition, measurement and designation 1 Scope This standard specifies the definition, measurement, designation and marking of ring-size. This standard is applicable to the measurement and designation of ring-size. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 ring-size the inner circumference of the ring, expressed in mm 2.2 numbers of ring-size a method of representing the ring-size with the numbers 1# to 36#, also known as finger-size 3 Measurement 3.1 Measuring tools Ring-stick (as shown in Figure 1), shall meet the following requirements: —— effective range: 160 mm ± 0.5 mm. —— measuring range: 41 mm to 76 mm; —— material: metal, or material with equivalent wear resistance. 3.2 Measuring method Put the ring on the ring-stick (see 3.1) with the inner side of the ring tightly attached to the ring-stick upright. Take the scale value closest to the position where the inner side of the ring is closely attached as the ring-size. Round off the calculation result to single digit, in mm. Example 1: If the scale value of the position where the inner side of the ring A is closely attached to the tapered ring-gauge is 55, the ring-size of the ring A is 55 mm; Example 2: If the scale value of the position where the inner side of the ring B is closely attached to the tapered ring-gauge is between 54 to 55, the ring-size of the ring B is 55 mm;

Contents of GB/T 11888-2014

Foreword i 1 Scope 2 Terms and definitions 3 Measurement 4 Designation and marking Annex A (Informative) Comparison of clause numbers between this standard and ISO 8653: 1986 Annex B (Informative) Technical deviations between this standard and ISO 8653: 1986 and the justifications Annex C (Informative) Correspondence between ring-sizes and numbers of ring-size