ISO 3098-1:2015根据ISO 3098的其他部分规定了技术产品文件（尤其是技术图纸）中使用的字体的一般要求。它包括使用以下技术应用字体的基本约定和规则:自由手写字体（通过底层“网格”）；模板和手工刻字工具；干式输送系统；数控刻字和绘图系统。

ISO 3098-1:2015 specifies the general requirements for lettering, in accordance with the other parts of ISO 3098, to be used in technical product documentation (in particular on technical drawings). It includes basic conventions as well as rules for the application of lettering using the following techniques: free-hand lettering (by means of an underlaid "grid"); templates and manual lettering instruments; dry transfer systems; numerically controlled lettering and draughting systems.