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ISO 9177:2022
ISO 9177:2022 Mechanical pencils for technical drawings – Part 2: Black leads – Classification and dimensions
CDN $76.00
Description
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”).
Edition
2
Published Date
2022-06-01
Status
PUBLISHED
Pages
4
Language
English
Format
Secure PDF
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Abstract
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”).
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