定义并分类精度等级、确定测量量和计时的固有误差和变化的方法，列出影响量、电气和机械要求、标记要求和符号。使用的概念以及标记装置和图表之间摩擦的影响在附录中解释。交叉引用:BS 1991:第6部分BS 2011BS 3939BS 4727:第1部分:第04BS 5164组

Defines and classifies accuracy classes, methods of determining intrinsic error and variations for measured quantity and time-keeping, lists influence quantities, electrical and mechanical requirements, marking requirements and symbols. Concept used and effect of friction between marking device and chart explained in appendices.Cross References:BS 1991:Part 6BS 2011BS 3939BS 4727:Part 1:Group 04BS 5164