面板和机架式工业过程测量和控制仪表的面板区域和开孔尺寸

[中文适用范围]： 该报告定义了安装在面板和机架上的工业过程测量和控制仪器的面板区域和切口尺寸系统。 [外文原描述]： Serves as a guide for selection of panel cut-out sizes and instrument front dimensions so that users may plan installations with the assurance that equipment purchased will fit, and manufacturers can design to ensure conformance to users' needs. Recognizes three known modular elements: 12 mm and 20 mm, both from established European practice, and 12.5 mm, the module established in IEC 60473. Has the status of a technical report.