Codes & Standards - Purchase
ISO 9177-2:2022
Mechanical pencils for technical drawings — Part 2: Black leads — Classification and dimensions
SKU: iso_083353_184222
Published by ISO
Publication Year 2022
2 Edition
4 pages
Product Details
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”).
Two types of black leads are available:
— polymer leads (designated by the letter “P”);
— ceramic leads (designated by the letter “C”).