Alphanumeric character sets for optical recognition — Part 2: Character set OCR-B — Shapes and dimensions of the printed image
光学识别用字母数字字符集第2部分:字符集OCR-B——印刷图像的形状和尺寸
Indicates the forms of printed images and the sizes of alphanumeric characters as well as the sings and graphical symbols (OCR-B-character set) intended for optical character reading according to ISO 646-1973.