ISO 9177-2:2022

Mechanical pencils for technical drawings — Part 2: Black leads — Classification and dimensions
Autor: ISO
Códigos ICS: 97.180 ; 01.100.40
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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”).

Especificaciones de la Norma
Fecha de Publicación 01/06/2022
Título Secundario Porte-mines pour le dessin technique — Partie 2: Mines graphite — Classification et dimensions
Páginas Técnicas 4
Idioma Inglés