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ISO 9177-2:2022

ISO 9177-2:2022

$12.35

Mechanical pencils for technical drawings — Part 2: Black leads — Classification and dimensions

Published By Publication Date Number of Pages
ISO 2022-06 12
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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”).

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ISO 9177-2:2022
$12.35