ISO/IEC TR 29158:2011 pdf free.Information technology — Automatic identification and data capture techniques — Direct Part Mark (DPM) Quality Guideline. ISO/IEC TR 29158:2011 is an engineering document intended for verifier manufacturers and application specification developers. ISO/IEC TR 29158:2011 was developed to assess the symbol quality of direct marked parts, where the mark is applied directly to the surface of the...