ISO 2692:2014定义了最大材料要求，最少材料要求和互惠要求。这些要求只能用于尺寸特征。 这些要求用于控制尺寸和几何形状相互依赖的工件的特定功能，例如。履行“部件组装”（最大材料要求）或“最小壁厚”（至少材料要求）的功能。然而，最大材料要求和最低材料要求也用于满足其他功能设计要求。 考虑到尺寸和几何尺寸之间的这种相互依赖性，当使用最大材料要求，最少材料要求或互惠要求时，ISO 8015中定义的独立性原则不适用

ISO 2692:2014 defines the maximum material requirement, the least material requirement and the reciprocity requirement. These requirements can only be applied to features of size. These requirements are used to control specific functions of workpieces where size and geometry are interdependent, e.g. to fulfil the functions "assembly of parts" (for maximum material requirement) or "minimum wall thickness" (for least material requirement). However, the maximum material requirement and least material requirement are also used to fulfil other functional design requirements. Considering this interdependence between size and geometry, the principle of independency defined in ISO 8015 does not apply when the maximum material requirement, least material requirement, or reciprocity requirement, are used.