scope:

Part 2 of this standard specifies the shapes, dimensions and tolerances for the ten digits 0 to 9, five symbols, and twenty-six letters, to be printed with magnetic ink 1) for the purpose of character recognition. It describes the various types of printing defects and other printing considerations, together with the tolerances permitted, and also contains specifications to signal level measurement. The characters specified in section 2 of this standard were developed initially for use in banks to permit automatic document handling for bank data processing, but they have application to other automatic processing systems as well.