ISO/IEC 25021:2012提供了指南，以指定质量测量元素（QME）和QME的初始设置为例。QME是根据属性和量化属性的测量方法定义的度量，可选地包括通过数学函数进行的转换。 ISO/IEC 25021:2012旨在与ISO/IEC 250nn SQuaRE系列的其他文件，尤其是ISO/IEC 25022、ISO/IEC 25023和ISO/IEC 25024一起使用的整个系统和软件产品生命周期。

ISO/IEC 25021:2012 provides guides to specify Quality Measure Elements (QME) and initial set of QME as examples. QME is a measure defined in terms of a property and the measurement method for quantifying it, including optionally the transformation by a mathematical function. ISO/IEC 25021:2012 is intended to be used throughout the system and software product life cycle used with other documents of the ISO/IEC 250nn SQuaRE series, especially ISO/IEC 25022, ISO/IEC 25023 and ISO/IEC 25024.