NEN-ISO 9177-2
Technical drawing materials - Mechanical pencils - Part 2: Classification and dimensions of black leads
inactive
| Organization: | NEN |
| Publication Date: | 1 May 1990 |
| Status: | inactive |
| Page Count: | 6 |
| ICS Code (Drawing equipment): | 01.100.40 |
scope:
This part of ISO 9177 specifies a classification and dimensions for black leads used for mechanical pencils. Two types of black leads are available: - polymer leads (designated by the letter "P") - ceramic leads (designated by the letter "C").
Document History
July 1, 2022
Mechanical pencils for technical drawings - Part 2: Black leads - Classification and dimensions
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...
NEN-ISO 9177-2
May 1, 1990
Technical drawing materials - Mechanical pencils - Part 2: Classification and dimensions of black leads
This part of ISO 9177 specifies a classification and dimensions for black leads used for mechanical pencils. Two types of black leads are available: - polymer leads (designated by the letter "P") -...