Homepage>ISO Standards>ISO 9177-2:2022-Mechanical pencils for technical drawings-Part 2: Black leads — Classification and dimensions
download between 0-24 hoursReleased: 2022
ISO 9177-2:2022
ISO 9177-2:2022-
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Standard´s number:
ISO 9177-2:2022
Pages:
4
Edition:
2
Released:
2022
Language:
English
Pages (English):
4
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”).
