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ISO 9177-3:2022

Current Revision

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

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


SDO ISO: International Organization for Standardization
Document Number ISO 9177
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO/TC 10
Publish Date Document Id Type View
Not Available ISO 9177-3:2022 Revision