This standard has been revised byISO 9177-3:2022
Abstract
Specifies bending strengths and a test method for black leads of HB hardness degree used for mechanical pencils for technical drawings.
General information
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Status : WithdrawnPublication date : 1994-07
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Edition : 1Number of pages : 3
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- ICS :
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Miscellaneous domestic and commercial equipment
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Drawing equipment
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