SS-ISO-9177-2 › Mechanical pencils - Part 2: Black leads - Classification and dimensions (ISO 9177-2:2022, IDT)
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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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Designation Name
SS-ISO 9177-2:2022
Revision Level
2022 EDITION
Status
Current
Publication Date
June 10, 2022
Language(s)
English
Page Count
12
International Equivalent
ISO 9177-2:2022(IDT)