标准摘要
[中文适用范围]： This International Standard specifies the types and fitting dimensions of mechanical and electromechanical watch-movements. This International Standard is applicable to the five following types of movements: Type 1 round, Type 2 shapeq round, Type 3 round with double cutting, Type 4:5 区, Type 56x8 [外文原描述]： ISO 3764:2016 specifies the types and fitting dimensions of mechanical and electromechanical watch-movements. This International Standard is applicable to the five following types of movements: - Type 1: round; - Type 2: shaped round; - Type 3: round with double cutting; - Type 4: 5 ½′′′; - Type 5: 6 × 8′′′.
英文名称Timekeeping instruments — Movements — Types, dimensions and nomenclature