The purpose of this paper is to highlight current fundamental assumptions in the ISO Geometrical Product Specification (GPS) system and indicate recent trends in the GPS area standardization as well as point out selected new tools that are available for designers, manufacturing engineers, and quality staff. ISO/TC 213 systematic approach to developing a coherent system of the ISO GPS standards is shown. The content of the main fundamental standards that establish the base of the ISO GPS system is analysed. Limitations and lack of some standards are indicted. The relations between base concepts like features, operations, characteristics, and uncertainties are shown. Next global standards that refer to dimensioning and geometrical tolerancing are indicated and discussed. The current attempt to develop those standards as rule-based standards, not case-based standards is highlighted and advantages as well as drawbacks of such an approach are underlined. New projects and works on selected standards under development are also reported.

本文的目的是强调ISO几何产品规范（GPS）系统中的当前基本假设，并指出GPS区域标准化的最新趋势，并指出可供设计人员，制造工程师和质量人员使用的精选新工具。 。显示了用于开发ISO GPS标准的连贯系统的ISO / TC 213系统方法。分析了建立ISO GPS系统基础的主要基本标准的内容。局限性和缺乏一些标准被起诉。显示了基本概念（例如特征，操作，特征和不确定性）之间的关系。指出并讨论了有关尺寸和几何公差的下一个全球标准。当前将这些标准开发为基于规则的标准的尝试，没有强调基于案例的标准，强调了这种方法的优点和缺点。还报告了正在开发的有关选定标准的新项目和工作。