SIST ISO 9177-2:2024
Mechanical pencils for technical drawings - Part 2: Black leads - Classification and dimensions
Mechanical pencils for technical drawings - Part 2: Black leads - Classification and dimensions
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 9
- Дата публикации:
- 1 февраля 2024 г.
- Издание:
- ISO IS 9177 edition 2 version 1
- ICS:
- 01.100.40
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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