Describes the forms of printed images and the sizes of alphanumeric characters as well as the signs and graphical symbols (OCR-A) intended for optical character reading according to ISO 646-1973.
ISO 1073-1:1976 history
1970ISO 1073-1:1976/Cor 1:1979 Optical recognition of alphanumeric character sets Part 1: Character set OCR-A Shape and size of printed images Technical Corrigendum 1
1976ISO 1073-1:1976/Amd 1:1978 Alphanumeric character sets for optical recognition; Part 1: Character set OCR-A; Shapes and dimensions of the printed image
1976ISO 1073-1:1976 Alphanumeric character sets for optical recognition; Part 1: Character set OCR-A; Shapes and dimensions of the printed image