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ISO 20318-1:2019

Mechanical pencils and leads for general use -- Classification, dimensions, quality and test methods -- Part 1: Mechanical pencils

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Kehtiv alates 26.02.2019
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26.02.2019
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This document specifies classification, dimensions, quality and test methods for hand-held mechanical pencilss which hold and feed out a lead, and are used for general writing. It is also applicable to multi-function pens equipped with a mechanical pencil unit. However, those pencils attached to machinery instruments such as a plotter are excluded.
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