一、引言 精密金属线纹尺(图1)有工作基准线纹尺和标准线纹尺两种。前者用于传递或检查长度单位量值,也用于测量精密零件和精密机床及精密仪器的座标精度等;后者是一种高精度的定位测量元件,用于精密机械和精密仪器上,如光学座标镗床、测长仪及工具显微镜等。 精密金属线纹尺是 I. INTRODUCTION The precision metal wire ruler (Figure 1) has two working standard ruler and standard ruler. The former is used to pass or check the length of the unit value, but also for the measurement of precision parts and precision machine tools and precision coordinate precision instruments; the latter is a high-precision positioning and measuring components for precision machinery and precision instruments, Such as optical coordinates boring machine, length measuring instrument and tool microscope. Precision metal wire ruler is