Preface Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the SCC Mirror Committee (SMC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T). For brevity, this Standard will be referred to as \"CAN/CSA-ISO/IEC 15416\" throughout. This Standard supersedes CAN/CSA-ISO/IEC 15416:02 (adopted ISO/IEC 15416:2000). Scope This document: specifies the methodology for the measurement of specific attributes of bar code symbols; defines a method for evaluating these measurements and deriving an overall assessment of symbol quality; and provides information on possible causes of deviation from optimum grades to assist users in taking appropriate corrective action. This document applies to those symbologies for which a reference decode algorithm has been defined, and which are intended to be read using linear scanning methods, but its methodology can be applied partially or wholly to other symbologies.