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B51-14 (R2019) – Boiler, pressure vessel, and pressure piping code

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ISO 9177:2022

ISO 9177:2022 Mechanical pencils for technical drawings – Part 2: Black leads – Classification and dimensions

CDN $85.00

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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 Detail Icon

English

Format Secure Icon

Secure PDF

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”).

Previous Editions

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