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Homepage>ISO Standards>ISO 9177-2:2022-Mechanical pencils for technical drawings-Part 2: Black leads — Classification and dimensions

ISO 9177-2:2022

ISO 9177-2:2022-Mechanical pencils for technical drawings-Part 2: Black leads — Classification and dimensions

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Standard´s number:	ISO 9177-2:2022
Pages:	4
Edition:	2
Released:	2022
Language:	English

DESCRIPTION

ISO 9177-2:2022

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”).

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