Reference number
ISO 20318-2:2019
ISO 20318-2:2019
© ISO 2024
International Standard
ISO 20318-2:2019
Mechanical pencils and leads for general use — Classification, dimensions, quality and test methods — Part 2: Black leads
Edition 1
2019-03
2019-03
Resumen
This document specifies classification, dimensions, quality and test methods for black leads used for mechanical pencils for general writing, as specified in ISO 20318-1.
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