ISO/TC 10
| Project No. | ISO 9177-2:2022 |
|---|---|
| Title | <p>This document specifies a classification and dimensions for black leads used for mechanical pencils for technical drawings.</p> <p>Two types of black leads are available:</p> <p>— polymer leads (designated by the letter “P”);</p> <p>— ceramic leads (designated by the letter “C”).</p> |
| Registration number (WIID) | 83353 |
| Scope | <p>This document specifies a classification and dimensions for black leads used for mechanical pencils for technical drawings.</p> <p>Two types of black leads are available:</p> <p>— polymer leads (designated by the letter “P”);</p> <p>— ceramic leads (designated by the letter “C”).</p> |
| Status | Standarts spēkā |
| ICS group | 97.180 01.100.40 |