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download between 0-24 hoursReleased: 2022
ISO 9177-3:2022
ISO 9177-3:2022-Mechanical pencils for technical drawings-Part 3: Black leads
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| Standard´s number: | ISO 9177-3:2022 |
| Pages: | 4 |
| Edition: | 2 |
| Released: | 2022 |
| Language: | English |
DESCRIPTION
ISO 9177-3:2022
This document specifies bending strengths and a test method for black leads of HB hardness degree used for mechanical pencils for technical drawings.