ISO 5459:2011规定了技术产品文档中指示和理解基准和基准系统的术语、规则和方法。它还提供解释来帮助用户理解所涉及的概念。 ISO 5459:2011定义了用于建立基准或基准系统的规范操作员（参见ISO 17450-2）。验证操作员（参见ISO 17450-2）可以采取不同的形式（物理或数学），并且不是ISO 5459:2011的主题。 ISO 2692中给出了基准的最大和最小材料要求的详细规则。

ISO 5459:2011 specifies terminology, rules and methodology for the indication and understanding of datums and datum systems in technical product documentation. It also provides explanations to assist the user in understanding the concepts involved. ISO 5459:2011 defines the specification operator (see ISO 17450-2) used to establish a datum or datum system. The verification operator (see ISO 17450-2) can take different forms (physically or mathematically) and is not the subject of ISO 5459:2011. The detailed rules for maximum and least material requirements for datums are given in ISO 2692.