Abstract

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This document specifies classification, dimensions, quality and test methods for black leads used for mechanical pencils for general writing, as specified in ISO 20318-1.


General information 

  • Status
     :  Published
    Publication date
     : 2019-03
  • Edition
     : 1
    Number of pages
     : 11
  • Technical Committee
     : ISO/TC 10 Technical product documentation
  • ICS
     :
    97.180 Miscellaneous domestic and commercial equipment
    01.100.40 Drawing equipment

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