ISO 9177-2:1989
Withdrawn
Date published:
Mechanical pencils — Part 2: Black leads — Classification and dimensions
Two types are available, black leads in which the binding agent is an organic polymer (designated by the letter "P"), and black leads in which the binding agent is clay (designated by the letter "C"). Classification is made according to the degree of hardness. Part 1 deals with the classification, dimensions, performance requirements and testing.
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ISO 9177-2:1989
Get this standard
Prices exclude GST
PDF
( Single user document)
$118.26 NZD
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