ISO 9177-2:2022
p
ISO 9177-2:2022
83353

Abstract  Preview

This document specifies a classification and dimensions for black leads used for mechanical pencils for technical drawings.

Two types of black leads are available:

—    polymer leads (designated by the letter “P”);

—    ceramic leads (designated by the letter “C”).


General information 

  •  :  Published
     : 2022-06
  •  : 2
     : 4
  •  : ISO/TC 10 Technical product documentation
  •  :
    97.180 Miscellaneous domestic and commercial equipment
    01.100.40 Drawing equipment

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std 1 38 PDF + ePub
std 2 38 Paper
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