标准摘要
[中文适用范围]： 规定了绘图比例规则的主要要求和精度及其以 SI 单位表示的刻度。 涵盖两种类型的绘图比例规则：手动使用的绘图比例规则和手动操作绘图机的绘图比例规则，两者均仅供专业使用。 不包括学校使用的量表规则。 [外文原描述]： Specifies the main requirements and the accuracy of draughting scale rules, and their graduations in SI units. Two types of draughting scale rules are covered: those for hand use and those for manually operated draughting machines, both for professional use only. Scale rules for use in schools are not included.
英文名称Draughting instruments with or without graduation — Part 1: Draughting scale rules