ISO/IEC 1073-1:1976 Alphanumeric character sets for optical recognition - Part 1: Character set OCR-A - Shapes and dimensions of the printed image 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. This product is a single user license only. Copying and/or networking is prohibited. By purchasing this product, you agree to abide by the AIM End User License Agreement.