ISO 9344:2011规定了用于测量、评估和比较的显微镜目镜中直径分别为19 mm、21 mm和26 mm的分划的尺寸、允许的材料缺陷和加工缺陷。
ISO 9344:2011 specifies dimensions and permissible material defects and processing faults for graticules with diameters of 19 mm, 21 mm and 26 mm to be used in microscope eyepieces for the purposes of measurement, assessment and comparison.