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ISO 9177-3:2022

$12.35

Mechanical pencils for technical drawings – Part 3: Black leads – Bending strengths of HB leads

Published By Publication Date Number of Pages
ISO 2022-01 12
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This document specifies bending strengths and a test method for black leads of HB hardness degree used for mechanical pencils for technical drawings.

ISO 9177-3:2022
$12.35