ISO 9177-3:1994 Preview

Mechanical pencils -- Part 3: Black leads -- Bending strengths of HB leads

Specifies bending strengths and a test method for black leads of HB hardness degree used for mechanical pencils for technical drawings.


General information

  • Status :  Published
    Publication date : 1994-06
  • Edition : 1
    Number of pages : 3
  • :
    ISO/TC 10
    Technical product documentation
  • 97.180
    Miscellaneous domestic and commercial equipment
    01.100.40
    Drawing equipment

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